What is INFRARED? Explains the principle,uses and application of INFRARED in daily life. Technology of INFRARED in various fields like medical, archaeology,astronomy and many others.
Infrared rays were first discovered in 1880 by William Herschel and have since been used in many applications. Infrared rays have wavelengths between 7.8 x 10-4 and 1 mm and cannot be seen by the human eye. Infrared rays are produced by the vibration of molecules when heated and have uses in fields like health, night vision, tracking, communication, spectroscopy, meteorology, climatology, and astronomy.
The document discusses the electromagnetic spectrum, which consists of all types of electromagnetic waves including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It explains that electromagnetic waves have properties of speed, frequency, and wavelength, and that frequency and wavelength have an inverse relationship, with higher frequencies corresponding to shorter wavelengths and more energy. It provides information about the characteristics and uses of different parts of the electromagnetic spectrum.
A. Electromagnetic waves travel as vibrations in electric and magnetic fields at the speed of light in a vacuum. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio to gamma rays based on increasing frequency and decreasing wavelength. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
C. Each type of electromagnetic wave has different applications including global positioning systems, microwave ovens, night vision goggles, visible light, sunbathing, medical imaging, and nuclear power.
1. In 1800, Sir Frederick William Hershel discovered infrared radiation beyond the red part of the visible light spectrum using a thermometer with a blackened bulb.
2. Infrared radiation has longer wavelengths than visible light, ranging from 0.7 to 300 micrometers. It was originally called "calorific rays" and is now called infrared.
3. Infrared radiation is divided into categories based on wavelength bands such as near, short, and far infrared.
This document discusses infrared radiation and some of its applications. It begins by explaining that infrared radiation has a wavelength between 0.7 and 300 micrometers, which is longer than visible light but shorter than microwaves. It notes that over half the energy from the Sun reaches Earth as infrared radiation and this balance affects the climate. It then lists several common applications of infrared technology including medicine, the military, industry, computers, security systems, and more. It provides more details on thermography, night vision, medical uses, and uses in meteorology. It concludes by discussing how infrared spectroscopy can be used for identification and detection of impurities in substances.
definition, speed, production, properties of electromagnetic waves and electromagnetic spectrum. waves in EM spectrum and their application in daily life.
Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. ... Microwaves are used to cook your food. Infrared waves are used in remote controls and are emitted from all warm objects, allowing them to be used to create heat-sensitive cameras
Electromagnetic Spectrum PowerPoint Presentation for Teachers/StudentsRoma Balagtas
Here are some additional examples of practical applications of different regions of the electromagnetic spectrum:
Radio waves:
- Wireless communication (WiFi, Bluetooth, mobile networks)
- Radio broadcasting
Microwaves:
- Satellite communication and television
- Cell phone networks
- Microwave ovens
Infrared:
- Infrared cameras and thermometers
- TV remote controls
- Infrared heating
Visible light:
- Lighting
- Photography
- Displays (LCD, LED screens)
Ultraviolet:
- UV lamps for curing, sterilization and counterfeit detection
- Fluorescence microscopy
- Dermatology treatments
X-rays:
-
Infrared rays were first discovered in 1880 by William Herschel and have since been used in many applications. Infrared rays have wavelengths between 7.8 x 10-4 and 1 mm and cannot be seen by the human eye. Infrared rays are produced by the vibration of molecules when heated and have uses in fields like health, night vision, tracking, communication, spectroscopy, meteorology, climatology, and astronomy.
The document discusses the electromagnetic spectrum, which consists of all types of electromagnetic waves including radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. It explains that electromagnetic waves have properties of speed, frequency, and wavelength, and that frequency and wavelength have an inverse relationship, with higher frequencies corresponding to shorter wavelengths and more energy. It provides information about the characteristics and uses of different parts of the electromagnetic spectrum.
A. Electromagnetic waves travel as vibrations in electric and magnetic fields at the speed of light in a vacuum. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio to gamma rays based on increasing frequency and decreasing wavelength. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
C. Each type of electromagnetic wave has different applications including global positioning systems, microwave ovens, night vision goggles, visible light, sunbathing, medical imaging, and nuclear power.
1. In 1800, Sir Frederick William Hershel discovered infrared radiation beyond the red part of the visible light spectrum using a thermometer with a blackened bulb.
2. Infrared radiation has longer wavelengths than visible light, ranging from 0.7 to 300 micrometers. It was originally called "calorific rays" and is now called infrared.
3. Infrared radiation is divided into categories based on wavelength bands such as near, short, and far infrared.
This document discusses infrared radiation and some of its applications. It begins by explaining that infrared radiation has a wavelength between 0.7 and 300 micrometers, which is longer than visible light but shorter than microwaves. It notes that over half the energy from the Sun reaches Earth as infrared radiation and this balance affects the climate. It then lists several common applications of infrared technology including medicine, the military, industry, computers, security systems, and more. It provides more details on thermography, night vision, medical uses, and uses in meteorology. It concludes by discussing how infrared spectroscopy can be used for identification and detection of impurities in substances.
definition, speed, production, properties of electromagnetic waves and electromagnetic spectrum. waves in EM spectrum and their application in daily life.
Examples of electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays. ... Microwaves are used to cook your food. Infrared waves are used in remote controls and are emitted from all warm objects, allowing them to be used to create heat-sensitive cameras
Electromagnetic Spectrum PowerPoint Presentation for Teachers/StudentsRoma Balagtas
Here are some additional examples of practical applications of different regions of the electromagnetic spectrum:
Radio waves:
- Wireless communication (WiFi, Bluetooth, mobile networks)
- Radio broadcasting
Microwaves:
- Satellite communication and television
- Cell phone networks
- Microwave ovens
Infrared:
- Infrared cameras and thermometers
- TV remote controls
- Infrared heating
Visible light:
- Lighting
- Photography
- Displays (LCD, LED screens)
Ultraviolet:
- UV lamps for curing, sterilization and counterfeit detection
- Fluorescence microscopy
- Dermatology treatments
X-rays:
-
The document discusses the electromagnetic spectrum and different types of electromagnetic waves. It provides information on light as an electromagnetic wave that can travel through vacuum, and describes the various types of electromagnetic waves including gamma rays, x-rays, ultraviolet, infrared, visible light, microwaves and radio waves. It then discusses some common applications of these different electromagnetic waves such as their use in communication technologies, medical imaging, food heating, remote controls and more.
Electromagnetic radiation consists of electric and magnetic fields. It can be categorized based on wavelength and frequency, with higher frequency radiation like X-rays and gamma rays being ionizing. Ultraviolet radiation is a type of electromagnetic radiation that is divided into UVA, UVB, and UVC bands. UVA and UVB reach the earth from the sun and can cause effects like erythema, tanning, and vitamin D synthesis in skin. Prolonged exposure to UV radiation can lead to premature skin aging and skin cancers. Precautions must be taken when using UV radiation therapeutically to avoid burns and other adverse effects.
Infrared radiation is electromagnetic radiation with wavelengths longer than those of visible light, ranging from 700 nanometers to 1 millimeter. It is emitted or absorbed by molecules as they change their rotational-vibrational movements. Infrared radiation is used for a variety of applications including night vision, thermography, spectroscopy, telecommunications, and heating.
Visible light waves are electromagnetic waves that humans can see, ranging from wavelengths of 390-750 nm. Each color of light has a different wavelength, with red having the longest at 620-750 nm and violet having the shortest at 380-450 nm. When white light passes through a prism, it is separated into the colors of the visible light spectrum due to differences in wavelength. Sir Isaac Newton was the first to observe this using sunlight and a prism.
The document is a presentation about electromagnetic waves. It contains the following key points:
1. Electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. They are classified based on wavelength and frequency.
2. All electromagnetic waves are transverse waves that travel at the speed of light and can be reflected, refracted, emitted or absorbed.
3. Different types of electromagnetic waves have various applications like radio for communication, infrared for night vision, visible light for sight, ultraviolet for sterilization, X-rays for medical imaging and gamma rays for cancer treatment.
4. Students are instructed to read the presentation, take an
Oersted, Faraday, Maxwell, and Hertz contributed to the development of electromagnetic theory through key experiments and findings. Oersted discovered that electric currents create magnetic fields. Faraday showed that changing magnetic fields induce electric fields. Maxwell formulated equations showing the relationship between electricity and magnetism. Hertz provided experimental evidence of electromagnetic waves and their link to light.
A. Electromagnetic waves travel as vibrations in electrical and magnetic fields at the speed of light without a medium. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio waves to gamma rays based on increasing frequency and decreasing wavelength. Different electromagnetic waves are used for technologies like WiFi, infrared devices, MRI, and X-rays.
To locate an earthquake epicenter using triangulation, seismologists determine the S-P interval from seismograms of at least three seismic stations. This interval is converted to epicentral distance and circles are drawn on a map with radii equal to these distances. The intersection of these circles identifies the epicenter. Triangulation is suitable for local quakes, while distance-time graphs are used for more distant quakes. Locating epicenters helps identify active fault lines and areas at risk for future major quakes due to long periods of inactivity on certain faults.
The document discusses the electromagnetic spectrum, which comprises seven types of electromagnetic radiation ranging from radio waves to gamma rays. It also discusses spectroscopy, the study of spectra to determine chemical composition and physical properties. There are three main types of spectra: continuous, dark-line, and bright-line. The document provides examples of how different regions of the electromagnetic spectrum are used, such as microwaves for radar and X-rays for medical imaging. It also summarizes two important factors about radiating bodies: Stefan-Boltzmann's law relating radiation to temperature, and how hotter objects radiate more energy at shorter wavelengths.
This document discusses the properties of electromagnetic waves. It describes how electromagnetic waves are produced by oscillating electric and magnetic fields and form a spectrum from gamma rays to radio waves. The key properties of all electromagnetic waves are that they are transverse waves that can travel through empty space at the speed of light, carry energy, and have frequencies and wavelengths that are inversely related. Sound waves are longitudinal rather than electromagnetic. Different colors of visible light have different amounts of energy.
Radio waves are used for GPS, wireless communications, and medical imaging. Microwaves are used in microwave ovens, radar, and satellite communications. Infrared is used in thermal imaging, remote controls, and night vision. Visible light is what we see, while ultraviolet sterilizes water and produces vitamin D. X-rays are used for medical imaging, and gamma rays are used for cancer treatment and in nuclear weapons. All electromagnetic waves travel at the speed of light and have different wavelengths and frequencies that determine their energy and ability to penetrate matter.
The document discusses the visible light spectrum and unsaturated colors. It notes that red light has the longest wavelength while violet has the shortest. It also defines wavelength as the distance between waves of energy traveling from one point to another, and photon as a tiny particle of light or electromagnetic radiation.
Ultraviolet (UV) radiation has wavelengths shorter than visible light. It is emitted by the sun and can be produced artificially. UV is divided into UVA, UVB, and UVC. While overexposure can harm health, moderate UV has benefits like vitamin D production. UV is used in applications like disinfection, lithography, and forensic analysis due to its ability to cause chemical reactions and fluorescence.
Infrared radiation was discovered in the early 19th century by William Herschel. Infrared radiation is an electromagnetic radiation with a wavelength longer than visible light. Infrared radiation includes most of the thermal radiation emitted by objects near room temperature through molecular rotational and vibrational movements. Infrared light is used in various applications like infrared cameras to detect heat loss, observe blood flow, and detect overheating equipment. It also allows astronomy observations of objects obscured by interstellar dust. Night vision devices using infrared illumination allow observation without detection. The Earth absorbs visible and invisible radiation from the sun and re-emits much of the energy as infrared radiation, which is absorbed by greenhouse gases in the atmosphere and re-radiated to warm
The document discusses electromagnetic waves and the electromagnetic spectrum. It explains that electromagnetic waves are energy carrying waves composed of oscillating electric and magnetic fields that propagate at the speed of light in a vacuum. The electromagnetic spectrum classifies electromagnetic waves by frequency and wavelength, from highest frequency/shortest wavelength to lowest frequency/longest wavelength: gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. All electromagnetic waves travel at the speed of light in a vacuum, which is approximately 300,000,000 meters per second.
This document provides an overview of the electromagnetic spectrum. It discusses the different types of electromagnetic waves including gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. These waves are classified based on their wavelength and frequency, with gamma rays having the shortest wavelengths and highest frequencies, and radio waves having the longest wavelengths and lowest frequencies. A variety of uses are described for each type of electromagnetic wave, including uses in medicine, communications, heating, and vision.
Dispersion of light results in a spectrum of visible light colors from red to violet (ROYGBIV). The document discusses how dispersion occurs when white light passes through water droplets, forming a rainbow. It also explains that higher frequency light waves have shorter wavelengths and greater intensity, bending more when dispersed, while lower frequency red light bends the least. The electromagnetic spectrum encompasses waves of different frequencies beyond the visible spectrum.
This document discusses electromagnetic waves and their classification according to frequency. Electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. All electromagnetic waves travel at the speed of light and differ in frequency and wavelength, with higher frequency waves having shorter wavelengths and higher energy. Examples are given of how each type of electromagnetic wave is used technologically and occurs naturally.
Visible light is a small part of the electromagnetic spectrum that is visible to the human eye. Isaac Newton discovered the visible light spectrum in the 17th century using prisms to break white light into its constituent colors. Visible light comes from sources like the sun, light bulbs, screens, and fireworks. It is important for vision and is used in lasers for applications like surgery. While mostly harmless, intense visible light can damage eyes.
Electromagnetic waves combine electric and magnetic fields that oscillate perpendicular to each other and travel through space. The electromagnetic spectrum includes many types of waves such as visible light, X-rays, microwaves, and radio waves. These different types of electromagnetic waves are distinguished by their varying frequencies and wavelengths. Sound waves are not considered electromagnetic waves.
Infrared radiation is a type of electromagnetic radiation that comes after microwaves and before visible light in the electromagnetic spectrum. It is an invisible light source produced primarily through thermal radiation as the movement of atoms and molecules increases with temperature. Infrared radiation is divided into three categories - near, mid, and far infrared - based on its wavelength. While prolonged exposure to high levels of infrared radiation can cause burns or overheating, it has a variety of technological applications including night vision, thermal imaging, wireless communication, and weather forecasting.
Infrared light is electromagnetic radiation that is invisible to the human eye but can be detected as heat. Infrared radiation is emitted from objects based on their temperature and makes up over half of the energy from the Sun that reaches Earth, playing a critical role in the climate. Infrared has wavelengths longer than visible light and is used in applications like night vision, temperature measurement, wireless communication, and energy efficiency in buildings.
The document discusses the electromagnetic spectrum and different types of electromagnetic waves. It provides information on light as an electromagnetic wave that can travel through vacuum, and describes the various types of electromagnetic waves including gamma rays, x-rays, ultraviolet, infrared, visible light, microwaves and radio waves. It then discusses some common applications of these different electromagnetic waves such as their use in communication technologies, medical imaging, food heating, remote controls and more.
Electromagnetic radiation consists of electric and magnetic fields. It can be categorized based on wavelength and frequency, with higher frequency radiation like X-rays and gamma rays being ionizing. Ultraviolet radiation is a type of electromagnetic radiation that is divided into UVA, UVB, and UVC bands. UVA and UVB reach the earth from the sun and can cause effects like erythema, tanning, and vitamin D synthesis in skin. Prolonged exposure to UV radiation can lead to premature skin aging and skin cancers. Precautions must be taken when using UV radiation therapeutically to avoid burns and other adverse effects.
Infrared radiation is electromagnetic radiation with wavelengths longer than those of visible light, ranging from 700 nanometers to 1 millimeter. It is emitted or absorbed by molecules as they change their rotational-vibrational movements. Infrared radiation is used for a variety of applications including night vision, thermography, spectroscopy, telecommunications, and heating.
Visible light waves are electromagnetic waves that humans can see, ranging from wavelengths of 390-750 nm. Each color of light has a different wavelength, with red having the longest at 620-750 nm and violet having the shortest at 380-450 nm. When white light passes through a prism, it is separated into the colors of the visible light spectrum due to differences in wavelength. Sir Isaac Newton was the first to observe this using sunlight and a prism.
The document is a presentation about electromagnetic waves. It contains the following key points:
1. Electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. They are classified based on wavelength and frequency.
2. All electromagnetic waves are transverse waves that travel at the speed of light and can be reflected, refracted, emitted or absorbed.
3. Different types of electromagnetic waves have various applications like radio for communication, infrared for night vision, visible light for sight, ultraviolet for sterilization, X-rays for medical imaging and gamma rays for cancer treatment.
4. Students are instructed to read the presentation, take an
Oersted, Faraday, Maxwell, and Hertz contributed to the development of electromagnetic theory through key experiments and findings. Oersted discovered that electric currents create magnetic fields. Faraday showed that changing magnetic fields induce electric fields. Maxwell formulated equations showing the relationship between electricity and magnetism. Hertz provided experimental evidence of electromagnetic waves and their link to light.
A. Electromagnetic waves travel as vibrations in electrical and magnetic fields at the speed of light without a medium. They have properties of both waves and particles.
B. The electromagnetic spectrum orders electromagnetic waves from radio waves to gamma rays based on increasing frequency and decreasing wavelength. Different electromagnetic waves are used for technologies like WiFi, infrared devices, MRI, and X-rays.
To locate an earthquake epicenter using triangulation, seismologists determine the S-P interval from seismograms of at least three seismic stations. This interval is converted to epicentral distance and circles are drawn on a map with radii equal to these distances. The intersection of these circles identifies the epicenter. Triangulation is suitable for local quakes, while distance-time graphs are used for more distant quakes. Locating epicenters helps identify active fault lines and areas at risk for future major quakes due to long periods of inactivity on certain faults.
The document discusses the electromagnetic spectrum, which comprises seven types of electromagnetic radiation ranging from radio waves to gamma rays. It also discusses spectroscopy, the study of spectra to determine chemical composition and physical properties. There are three main types of spectra: continuous, dark-line, and bright-line. The document provides examples of how different regions of the electromagnetic spectrum are used, such as microwaves for radar and X-rays for medical imaging. It also summarizes two important factors about radiating bodies: Stefan-Boltzmann's law relating radiation to temperature, and how hotter objects radiate more energy at shorter wavelengths.
This document discusses the properties of electromagnetic waves. It describes how electromagnetic waves are produced by oscillating electric and magnetic fields and form a spectrum from gamma rays to radio waves. The key properties of all electromagnetic waves are that they are transverse waves that can travel through empty space at the speed of light, carry energy, and have frequencies and wavelengths that are inversely related. Sound waves are longitudinal rather than electromagnetic. Different colors of visible light have different amounts of energy.
Radio waves are used for GPS, wireless communications, and medical imaging. Microwaves are used in microwave ovens, radar, and satellite communications. Infrared is used in thermal imaging, remote controls, and night vision. Visible light is what we see, while ultraviolet sterilizes water and produces vitamin D. X-rays are used for medical imaging, and gamma rays are used for cancer treatment and in nuclear weapons. All electromagnetic waves travel at the speed of light and have different wavelengths and frequencies that determine their energy and ability to penetrate matter.
The document discusses the visible light spectrum and unsaturated colors. It notes that red light has the longest wavelength while violet has the shortest. It also defines wavelength as the distance between waves of energy traveling from one point to another, and photon as a tiny particle of light or electromagnetic radiation.
Ultraviolet (UV) radiation has wavelengths shorter than visible light. It is emitted by the sun and can be produced artificially. UV is divided into UVA, UVB, and UVC. While overexposure can harm health, moderate UV has benefits like vitamin D production. UV is used in applications like disinfection, lithography, and forensic analysis due to its ability to cause chemical reactions and fluorescence.
Infrared radiation was discovered in the early 19th century by William Herschel. Infrared radiation is an electromagnetic radiation with a wavelength longer than visible light. Infrared radiation includes most of the thermal radiation emitted by objects near room temperature through molecular rotational and vibrational movements. Infrared light is used in various applications like infrared cameras to detect heat loss, observe blood flow, and detect overheating equipment. It also allows astronomy observations of objects obscured by interstellar dust. Night vision devices using infrared illumination allow observation without detection. The Earth absorbs visible and invisible radiation from the sun and re-emits much of the energy as infrared radiation, which is absorbed by greenhouse gases in the atmosphere and re-radiated to warm
The document discusses electromagnetic waves and the electromagnetic spectrum. It explains that electromagnetic waves are energy carrying waves composed of oscillating electric and magnetic fields that propagate at the speed of light in a vacuum. The electromagnetic spectrum classifies electromagnetic waves by frequency and wavelength, from highest frequency/shortest wavelength to lowest frequency/longest wavelength: gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. All electromagnetic waves travel at the speed of light in a vacuum, which is approximately 300,000,000 meters per second.
This document provides an overview of the electromagnetic spectrum. It discusses the different types of electromagnetic waves including gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. These waves are classified based on their wavelength and frequency, with gamma rays having the shortest wavelengths and highest frequencies, and radio waves having the longest wavelengths and lowest frequencies. A variety of uses are described for each type of electromagnetic wave, including uses in medicine, communications, heating, and vision.
Dispersion of light results in a spectrum of visible light colors from red to violet (ROYGBIV). The document discusses how dispersion occurs when white light passes through water droplets, forming a rainbow. It also explains that higher frequency light waves have shorter wavelengths and greater intensity, bending more when dispersed, while lower frequency red light bends the least. The electromagnetic spectrum encompasses waves of different frequencies beyond the visible spectrum.
This document discusses electromagnetic waves and their classification according to frequency. Electromagnetic waves include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. All electromagnetic waves travel at the speed of light and differ in frequency and wavelength, with higher frequency waves having shorter wavelengths and higher energy. Examples are given of how each type of electromagnetic wave is used technologically and occurs naturally.
Visible light is a small part of the electromagnetic spectrum that is visible to the human eye. Isaac Newton discovered the visible light spectrum in the 17th century using prisms to break white light into its constituent colors. Visible light comes from sources like the sun, light bulbs, screens, and fireworks. It is important for vision and is used in lasers for applications like surgery. While mostly harmless, intense visible light can damage eyes.
Electromagnetic waves combine electric and magnetic fields that oscillate perpendicular to each other and travel through space. The electromagnetic spectrum includes many types of waves such as visible light, X-rays, microwaves, and radio waves. These different types of electromagnetic waves are distinguished by their varying frequencies and wavelengths. Sound waves are not considered electromagnetic waves.
Infrared radiation is a type of electromagnetic radiation that comes after microwaves and before visible light in the electromagnetic spectrum. It is an invisible light source produced primarily through thermal radiation as the movement of atoms and molecules increases with temperature. Infrared radiation is divided into three categories - near, mid, and far infrared - based on its wavelength. While prolonged exposure to high levels of infrared radiation can cause burns or overheating, it has a variety of technological applications including night vision, thermal imaging, wireless communication, and weather forecasting.
Infrared light is electromagnetic radiation that is invisible to the human eye but can be detected as heat. Infrared radiation is emitted from objects based on their temperature and makes up over half of the energy from the Sun that reaches Earth, playing a critical role in the climate. Infrared has wavelengths longer than visible light and is used in applications like night vision, temperature measurement, wireless communication, and energy efficiency in buildings.
This document provides an overview of infra red radiations (IRR) and their use in physiotherapy. It discusses topics such as the introduction and classification of IRR, their production and physical effects including heat production and absorption. Physiological effects of IRR like vasodilation and nerve stimulation are explained. The document also outlines indications and contraindications for IRR use as well as dangers and techniques for their application.
Infrared radiation lies between visible light and microwaves, with wavelengths between 750 nm and 400,000 nm. It is subdivided into different types based on wavelength. Infrared lamps used in physiotherapy are either non-luminous generators, which produce infrared rays between 750 nm and 15,000 nm, or luminous generators, which also emit visible light and ultraviolet rays between 350 nm and 4,000 nm. Infrared radiation is mostly absorbed by water and proteins in the skin, with penetration depth depending on several factors. It is used therapeutically to relieve pain, relax muscles, increase blood supply and joint mobility, and accelerate healing.
Sonar is a system that uses sound waves to detect and locate objects underwater. It works by transmitting sound pulses and measuring the reflection of those pulses off objects. There are two main types: active sonar, which transmits sound pulses and listens for echoes, and passive sonar, which only listens for sounds emitted by other sources. Sonar has many applications including locating underwater objects, mapping the seafloor, and detecting other vessels. However, high-intensity sonar can negatively impact marine life like whales and dolphins that rely on sound.
Infrared rays are electromagnetic waves emitted or absorbed by objects that are heated. They are invisible to the human eye but can be detected by special cameras or human skin. Infrared rays play a role in the greenhouse effect and global warming by being trapped in the atmosphere after being emitted from heated surfaces on Earth. Exposure to high levels of infrared rays can cause burns, fires, or dehydration if a human is overexposed.
S. Laguela - Aerial thermography from low-cost UAV for the generation of ther...AITAworkshop
Modified after the talk presented at AITA2013 - http://ronchi.isti.cnr.it/AITA2013
The talk was mentioned for the "Ermanno Grinzato" Under 35 Best Paper Award (http://ronchi.isti.cnr.it/AITA2013/award.html)
The talk was based on the paper Aerial thermography from low-cost UAV for the generation of thermographic digital terrain models by S. Lagüela, L. Díaz-Vilariño, D. Roca, J. Armesto, AITA2013 Abstract Book, p 77-80, 2013
E. Kennedy - Infrared nanoscopy of cells for nanoscale therapeutic agent loca...AITAworkshop
Modified after the talk presented at AITA2013 - http://ronchi.isti.cnr.it/AITA2013
The talk was mentioned for the "Ermanno Grinzato" Under 35 Best Paper Award (http://ronchi.isti.cnr.it/AITA2013/award.html)
The talk was based on the paper Infrared nanoscopy of cells for nanoscale therapeutic agent localization by E. Kennedy, R. Al-Majmaie, M. Al-Rubeai, D. Zerulla, J. H. Rice, AITA2013 Abstract Book, p 49-51, 2013
Biodisc - Benefits of Far Infrared RaysRanvir Singh
The document summarizes research on the health benefits of far infrared radiation (FIR) therapy. It states that NASA research found wavelengths between 8-14 microns to be most effective at penetrating the human body. When used therapeutically, this frequency range has the greatest effect by producing warmth to expand capillaries and stimulate blood circulation. Extensive worldwide research over 25 years has shown FIR's ability to strengthen immunity, improve blood flow, ease muscle spasms, alter pain sensation, and promote tissue repair by penetrating tissues and transforming to thermal energy. Japanese research in particular has found FIR therapy highly effective in treating numerous medical conditions by dilating blood vessels and aiding the removal of toxins.
SONAR uses sound waves to detect obstacles in water. It was invented in 1906 and is used by navies and whales. Active SONAR sends out sound waves and detects echoes to accurately map locations, but reveals the user's position. Passive SONAR listens for other sound waves without emitting any, making it better for stealth but less accurate unless combined with triangulation. While effective for mapping underwater, high-powered naval SONAR can damage cetaceans' hearing and cause hemorrhaging.
Description about Infrared Rays ,discovery of infrared rays ,process of discovery of infrared rays ,history of infrared rays ,today's usage of infrared rays ,properties of infrared rays ,the electromagnetic spectrum ,about infrared radiations ,futre usage of infrared rays/radiations ,dagerous about infrared rays ,protection from infrared rays
1. Infrared radiation is electromagnetic radiation with longer wavelengths than visible light.
2. The discovery of infrared radiation is attributed to astronomer William Herschel in 1800.
3. Infrared radiation is commonly divided into near-infrared, short-wavelength infrared, mid-wavelength infrared, long-wavelength infrared, and far infrared based on wavelength.
This document discusses infrared imaging and thermography. It begins by explaining infrared light and how objects emit infrared radiation depending on their temperature and emissivity. It then describes the principle of infrared thermography, which uses infrared cameras to detect the infrared radiation emitted by objects and produce thermograms. The document outlines the different formats of infrared images and the two main types of infrared cameras - cooled detectors that require cryogenic cooling and uncooled detectors that operate at ambient temperature. It concludes by discussing some advantages and disadvantages of infrared thermography as well as its applications in various fields such as preventative maintenance, medical imaging, and nondestructive testing.
The History of SWD
Production, Generation, Method of Application, Patient Preparation, Physiologcal and therapeutic effects, Indications, Contraindications daners of SWD, and Evidence Based Practice.
The document discusses wound healing and various modalities used to promote wound healing such as ultrasound, laser, ultraviolet light, and pulsed shortwave diathermy. It covers the normal phases of wound healing including inflammatory, proliferation and maturation phases. Factors that can inhibit wound healing and importance of wound measurement are summarized. Electrical stimulation modalities like high voltage pulsed current and low voltage pulsed current are described along with their proposed mechanisms of action in accelerating wound healing. Placement and treatment procedures for electrical stimulation are also outlined.
The document discusses cleanroom protocols and procedures. It defines cleanrooms and their importance for minimizing contamination, especially in semiconductor manufacturing. It outlines cleanroom classifications, air filtration systems, environmental controls, and guidelines for cleaning, materials selection, and user behavior. Strict adherence to cleanroom protocols by all users is emphasized as essential for maintaining the clean environment.
These slides use concepts from my (Jeff Funk) course on Business Models at National University of Singapore to analyze the business model for Google Cardboard. Google Cardboard provides users with a virtual reality experience for a much lower price than that from Occulus Rift. It combines a fold-out cardboard mount with an Android smart phone to enable users to feel as though they are part of a video or game. It is light, does not require wires, and content will be available from YouTube and Google Play. Young males are expected to be the largest users of Google Cardboard. Google expects to make money from sales of content through Google Play. The slides describe the value proposition, method of value capture, customers, scope of activities, and method of strategic control for Google Cardboard.
Shortwave diathermy (SWD) is a therapeutic modality that uses electromagnetic energy to generate deep heat in tissues. It can be delivered continuously or pulsed. The frequency used, type of SWD unit, and water content of tissues affect the pattern of heat produced. SWD has various therapeutic effects like increasing blood flow and accelerating wound healing. It is used to treat conditions like recent injuries, arthritis, and muscle pain and spasm. Proper application of SWD involves preparing the patient, machine, and electrodes to deliver controlled doses of energy to target tissues while avoiding risks like burns or electric shock.
This document provides an overview of satellite communication and satellite systems. It discusses different types of transmission systems including radio, coaxial cable, and optical fiber systems. It describes how radio systems use electromagnetic waves to transmit signals and the portions of the frequency spectrum used. The document outlines the layers of the atmosphere and how the ionosphere and troposphere can propagate radio waves. It also categorizes different types of radio communication including ionosphere communication, line of sight microwave communication, and troposphere scatter communication. The document discusses advantages of satellite communication and components of a satellite communication network including the space and ground segments. It covers topics like satellite orbits, frequency bands used, and multiple access techniques in satellite systems.
The document discusses visible light and color. It notes that objects seem brighter and have more color when illuminated by light, as light allows objects to reflect and refract light. It also discusses the different types of light sources like incandescent, fluorescent, and neon lights. The color we see of objects depends on which wavelengths of light they reflect or absorb.
An infrared detector is a device that detects infrared radiation. There are two main types - thermal detectors and photodetectors. Thermal detectors detect changes in temperature from infrared radiation, while photodetectors use semiconductors to directly detect photons. Infrared radiation was discovered in 1800 and has wavelengths longer than visible light. Infrared detectors work based on Planck's radiation law, Stephan Boltzmann law, and Wein's displacement law. They have applications in night vision, astronomy, tracking, art restoration, and more due to advantages like long battery life, reliability in day/night, and not requiring contact with detected objects.
The document discusses the electromagnetic spectrum and applications of different types of electromagnetic waves. It begins by explaining that electromagnetic waves are produced by moving electrons and consist of oscillating electric and magnetic fields. It then describes the main components of the electromagnetic spectrum from gamma rays to radio waves in order of decreasing frequency and increasing wavelength. Finally, it provides examples of applications of different types of electromagnetic waves, including using radio waves for communication, microwaves for satellite TV, infrared for remote controls, light for fiber optics, ultraviolet for sterilization, x-rays for medical imaging, and gamma rays for radiation therapy.
Electromagnetic waves travel as vibrations in electric and magnetic fields and include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. They are arranged in order of increasing frequency and decreasing wavelength in the electromagnetic spectrum. Electromagnetic waves have various properties including speed, frequency, wavelength, and energy level, with higher frequency waves having higher energy. Different types of electromagnetic waves are used for various applications such as communication technologies, cooking, medical imaging, sterilization, and radiation therapy.
Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance using aircraft or satellites. It involves the acquisition of imagery and geospatial data through the analysis of electromagnetic radiation emitted or reflected from objects such as the Earth's surface. Some key advantages of remote sensing include its ability to provide cost-effective data collection over large or inaccessible areas and to monitor changes over time. Common applications include land use mapping, agriculture, forestry, geology and natural disaster monitoring.
1. X-rays have a shorter wavelength than UV light and can pass through soft tissues like skin.
2. X-rays are used in medical imaging to see inside the body as they pass through soft tissues but are partially or fully blocked by denser tissues and bones.
3. Scientists also use X-rays to study the atomic and molecular structure of materials.
Application of electromagnetic waves.pptxRenmarieLabor
- Radio waves are used for communication like radio and television broadcasting. They have the longest wavelengths and are produced by vibrating electrons in an antenna.
- Microwaves have shorter wavelengths than radio waves and are used for applications like satellite communications, radar, cell phones, and microwave ovens. They can penetrate the atmosphere to enable satellite communication and their short wavelengths allow them to be reflected by small objects for radar.
- Infrared, visible light, ultraviolet, X-rays, and gamma rays are all parts of the electromagnetic spectrum with increasingly shorter wavelengths and higher frequencies and energies. They have various applications in areas like photography, medical imaging, sterilization, and cancer treatment.
detail information of advance total station and remote sensingshaikh imran
This document provides an introduction to remote sensing. It discusses how remote sensing works by measuring electromagnetic radiation that has interacted with the Earth's surface. It describes the basic principles of remote sensing, including how electromagnetic radiation is transmitted, absorbed, reflected, or emitted when it interacts with different surfaces. It also discusses different types of remote sensing platforms and sensors, including optical, infrared, microwave, and radar sensors. The full process of remote sensing is outlined, from the energy source and its interaction with the atmosphere and target, to data collection, transmission, processing, analysis, and application.
This document provides an overview of thermal remote sensing. It begins with an introduction to remote sensing and defines thermal remote sensing as measuring electromagnetic radiation in the thermal infrared region. It describes the atmospheric windows and fundamental radiation laws governing thermal remote sensing. Applications discussed include surface temperature detection, fire detection, and volcano monitoring. The document concludes with the advantages of being able to detect true temperatures and limitations such as difficulty maintaining sensor temperatures.
Electromagnetic waves include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. They are formed by oscillating electric and magnetic fields and travel at the speed of light. Different types of electromagnetic waves interact with matter in different ways depending on their wavelength. Many parts of the electromagnetic spectrum are used in medicine for applications like MRI, infrared therapy, ultrasound, X-rays, and PET scans.
Electromagnetic Spectrum - Waves Around UsPrachi Mehta
The document discusses the electromagnetic spectrum and the different types of electromagnetic waves. It explains that the electromagnetic spectrum includes waves with different wavelengths and energies, from radio waves to gamma rays. Each type of wave interacts with matter in a unique way. The document then provides details on specific parts of the spectrum, including infrared rays, which are used in thermal imaging; X-rays, which can penetrate soft tissues; ultraviolet rays, which cause tanning and are used for watermarking; microwaves, which are used in radar and microwave ovens; and radio waves, which are used for broadcasting radio, television, and magnetic resonance imaging.
Molecular vibrations cause characteristic absorption bands in the infrared region of the electromagnetic spectrum. [FTIR] spectroscopy involves passing infrared radiation through a sample and measuring the wavelengths absorbed. This creates a molecular "fingerprint" that can be used to identify unknown chemicals and study molecular structure. FTIR has numerous applications including analysis of organic materials, biological samples, and industrial contaminants. It provides a simple, rapid and sensitive technique for analytical chemistry.
Sir Frederick William Herschel was a German-born astronomer who discovered the planet Uranus and infrared radiation. He discovered infrared accidentally while conducting research to filter sunlight for viewing the solar system. Infrared radiation has wavelengths longer than visible light but shorter than microwave radiation. It is emitted or absorbed by molecules and detected as heat. Infrared has many applications including night vision, temperature measurement, medical therapy, and wireless communication.
The electromagnetic spectrum consists of radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, X-rays, and gamma waves. All electromagnetic waves travel at the same speed of approximately 3x10^8 m/s in a vacuum. Wavelength and frequency are inversely related - as wavelength increases, frequency decreases and vice versa. Shorter wavelengths correspond to higher frequencies and energies. Each type of electromagnetic wave has distinct properties and applications. Radio waves are used for communication and broadcasting while microwaves are used for medical and consumer applications like microwave ovens. Infrared is detected as heat and used across industries. Visible light is detected by the human eye. X-rays and gamma rays have high
Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, and radio waves are all part of the electromagnetic spectrum, ordered from highest to lowest frequency and shortest to longest wavelength. Each type of electromagnetic wave has different uses:
- Gamma rays and X-rays are used to kill cancer cells and take medical images.
- Ultraviolet sterilizes medical equipment and detects counterfeit currency.
- Visible light enables vision and powers plant photosynthesis.
- Infrared provides medical therapy and heating.
- Microwaves enable radar, mobile phones, and cooking via microwave ovens.
- Radio waves power radio, television, and satellite and aircraft
Thermal infrared remote sensing involves observing electromagnetic radiation emitted from objects in the thermal infrared wavelength range of 3-14 micrometers. In this range, sensors can detect the thermal radiative properties of ground materials. Thermal infrared imagery captures relative differences in surface temperature or radiance. Interpreting thermal images requires understanding factors like the time of day the image was taken, whether it is a positive or negative image, and how emissivity and other surface characteristics impact observed radiation and temperature values.
Infrared radiation is electromagnetic radiation with wavelengths longer than those of visible light, but shorter than microwave wavelengths. Infrared imaging is used extensively for military and civilian purposes such as target acquisition, surveillance, night vision, thermal efficiency analysis, and astronomy. Infrared radiation can also be used for heating, tracking objects that emit infrared, and short-range wireless communication using infrared light-emitting diodes.
Remote sensing uses electromagnetic radiation (EMR) reflected or emitted from the Earth's surface to detect and identify surface features. EMR interacts with the atmosphere and surface in different ways depending on its wavelength. Shorter wavelengths like visible and infrared radiation are either absorbed or scattered in the atmosphere by gases, particles and moisture. Remote sensing instruments measure reflected solar radiation and emitted terrestrial radiation to understand surface properties.
Tugasan ini membincangkan kaedah-kaedah penenangan lalu lintas yang boleh dilaksanakan di Taman Kimsar, Perai, Pulau Pinang untuk mengawal lalu lintas di kawasan perumahan tersebut. Antara langkah yang dicadangkan ialah pemasangan bonggol jalan, bantal kelajuan, dan pengalihan lalu lintas di persimpangan masuk kawasan perumahan.
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This presentation explains about music preferences among Electrical Engineering students of Polytechnic Sultan Salahuddin Abdul Aziz Shah. It is a survey conducted on 20 students of Electrical Engineering department.
The document discusses electroencephalography (EEG), which is a medical imaging technique that reads electrical activity in the brain using electrodes placed on the scalp. An EEG machine consists of electrodes, amplifiers, filters, and a recording unit. EEGs are used to diagnose epilepsy, monitor brain activity during anesthesia, and investigate sleep disorders. The document describes the components of an EEG machine and preparation of patients for EEG recording. It also explains the different types of brain waves - beta, alpha, theta, and delta - that are analyzed during EEG interpretation.
The document summarizes the blood centrifugation process in 3 steps:
1) Blood collection bags are placed in a centrifuge machine and spun to separate components.
2) This causes the red blood cells to deposit on the bottom while the plasma and platelets separate above.
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Taylor Swift is an American singer, songwriter, and actress born in 1989 in Reading, Pennsylvania. Some of her many achievements include being the top-selling digital artist in music history, winning 4 Grammy Awards including Album of the Year in 2010, and receiving 7 American Music Awards including Artist of the Year in 2009. She is known for her fearless attitude towards success and adventurous spirit in her music.
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Animal Cruelty: The Unreaveled Truth Behind CircusesShaleni Kavirajan
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This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
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Macroeconomics- Movie Location
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Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
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Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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2. Infrared
??
is invisible
radiant
energy
a type of
electromagnetic
radiation
falls in the range
of the (EM)
spectrum
between
microwaves and
visible light.
frequencies
from about 3
GHz up to about
400 THz
3. ORIGIN OF “INFRARED”
The name means below red, the Latin infra meaning "below".
Red is the color of the longest wavelengths of visible light.
Infrared light has a longer wavelength (and so a lower frequency)
than that of red light visible to humans, hence the literal meaning of
below red.
INFRARED=INFRA+RED
4. HISTORY OF INFRARED
• DISCOVERY OF INFRARED - Sir Frederick William
Herschel
• Showed that the Sun emits Infrared light by using a prism to
refract light from the sun and detected the infrared, beyond
the red part of the spectrum, through an increase in the
temperature recorded on a thermometer. He was surprised at
the result and called them "Calorific Rays".
• Calorific means “Heat generating.”
5. WHERE IS INFRARED RADIATION FOUND?
• Infrared waves are emitted by all warm objects. They also heat
up the objects on which they fall. When they fall on any
substances, the molecules in the substances absorb this energy
and get excited and as a result of this, the substance gets heated.
• A very good example is the earth. Earth gets heated up, due to
the infrared radiation falling on it from the Sun.
6. HOW DOES INFRARED RADIATION WORK?
• Infrared radiation is heat radiated by an object. When an
object gets heated, it gains energy as a result of which the
atoms and molecules move or vibrate and radiate infrared
which is heat.
• Objects that are not hot enough to radiate visible light
will radiate infrared. When infrared waves touch a surface
or fall on any substances / objects, heat energy is released.
This heat energy is not dependent on the temperature of the
surroundings.
• Examples of infrared radiation are, heat from the Sun,
heat from fire, heat from radiator, etc. The energy from
the Sun that reaches the earth has a higher percentage of
infrared radiation
• Infrared rays travel through air and vacuum and they
do not need a medium to travel through. They heat up any
objects on which they fall and produce heat. For example
surface of the earth, walls of the house, human body, etc.
7. • The infrared radiation is spread across a band (spectrum) of wavelengths (0.75 micrometer to 1000
micrometers) and hence it is divided into smaller sections.
• Sensors are very sensitive and do not detect all of these wavelengths and they will be built to sense a
particular / small band of wavelengths. So infrared radiation of each region has different use or application.
The different divisions of the infrared region are as follows ;
9. Regions of INFRARED Characteristics
Near INFRARED, NIR • The wavelength range is from 0.75 to 1.4
micrometers.
• This is the region near to the visible red region.
• This is used in fibre optic communication and night
vision devices.
• It is also used in remote controls, astronomy,
remote monitoring, material science, medical field
and agriculture.
Short wavelength INFRARED, SWIR • The wavelength range is from 1.4 to 3
micrometers.
• This is used for long distance telecommunications.
• It is also used in SWIR cameras, night vision goggles
that play a major role for military purposes.
Medium INFRARED, MIR • The wavelength range is 3 to 8 micrometers.
• This is used in guided missile technology, infrared
spectroscopy, communication, chemical industry,
and astronomy.
10. Regions of INFRARED Characteristics
Long wavelength INFRARED, LWIR • The wavelength range of this division is 8 to 15
micrometers.
• This is the thermal infrared region and is used to
detect thermal emissions that require no
illumination from other sources (thermal imaging).
• This finds extensive application in astronomical
telescopes and optical fibre communication
Far INFRARED, FIR • The wavelength range is 15 to 1000 micrometers.
• These are used in infrared lasers, astronomy,
infrared saunas and extensively used in the medical
field where it helps strengthen immune system such
as cancer therapy.
11. DETECTION OF INFRARED RADIATION
• Infrared radiation can be detected by infrared detectors that
react to infrared radiation
• Infrared imaging cameras are a good example for
recording infrared images.
• There are some electronic devices that can detect infrared
radiation and they have to be maintained at a lower
temperature in order to avoid heat from the device interfering
with the detection of infrared. For example;
• Thermocouple detectors, Bolometers - Heat
sensitive devices that react to the presence of IR radiation
• Photovoltaic cells, photoconductors - made
of semiconductor materials. The electrical conductivity of
these materials increase when exposed to infrared
radiation thereby helping with the detection of IR
radiation
12. USES OF INFRARED
Used in night vision devices to observe animals or people using the phenomenon called infrared illumination. The
observant will not know that they are being observed.
Used in astronomical telescopes that are equipped with infrared sensors and these telescopes are used to detect
distant planets that are in the dusty regions of space, as they cannot be viewed using a normal telescope. They are also
used to detect objects that have had a high red-shift (shifting of wavelength towards the red end of the spectrum).
Used in the medical field to locate diseased tissues (these areas emit abnormal heat compared to the other areas) and
injury by analyzing the body tissue and body fluid.
Used for military purposes where infrared imaging devices are used to locate enemy troops in the dark, detect hidden
mines, arm caches, to guide anti-aircraft missiles, etc.
In industries they are used for welding plastics, drying prints, curing (process of hardening) coatings etc.
Used in archaeology to study ancient civilizations
13. APPLICATIONS OF INFRARED
COMMUNICATION
In infrared transmission,
beaming is the communication of
data between wireless devices
using a beam of infrared light. This
beam, invisible to humans, is used
in many familiar devices, such as
television remote controls and
garage door openers.
HEALTH CARE
Digital Infrared Thermal Imaging
(DITI) is a technique that is used for
diagnosis in the medical field. This
process makes use of thermal imaging
cameras that are called DITI cameras that
record thermograms depending on the
infrared radiation emitted by the body
Infrared radiation is used in thermotherapy which finds wide
application in the treatment of high blood pressure, arthritis,
heart failure, chronic fatigue, stress, toxicity, insomnia, pain
relief, high cholesterol, injuries, diabetes, muscular pain etc.,
with the help of infrared saunas. It is also used in
physiotherapy and in treatments of cancer
14. •used to monitor the climate and weather of earth. This helps
with the study of land and water temperatures and features
of the ocean and clouds too
•Satellites that are fitted with scanning radiometers that have infrared
sensors are used to produce infrared images of clouds, land and
sea on the basis of their temperatures
•The images produced are in grey scale (colder areas are white or lighter
shades of grey and warmer areas are black or darker shades of grey)
• Infrared sensors in satellites help detect and study pollution, fire,
deforestation, volcanoes and their ash clouds, ice mapping, sandstorms,
auroras, snow, ocean and air currents, etc.
METEOROLOGY
• This field deals with the study of infrared
radiation emitted by objects in the
Universe.
• infrared telescopes are used to detect
protostars and study the cores of galaxies
that usually have high dust content
• Since infrared telescopes are sensitive to heat, the
sensors in the telescope need to be cooled and
other parts shielded from heat.
ASTRONOMY
15. HEATING
• Infrared Panels are used to emit infrared radiation to heat up the room
• When radiation from these panels fall on any object like wall or floor or any other objects, the radiation is
absorbed by the molecules in the objects and they start oscillating / vibrating. These molecules continue to
absorb energy and their frequency of oscillation increases. When this frequency of oscillation is equal to the
frequency of the infrared radiation, the molecules (the object) start to reflect back the radiation towards
other objects and this process continues.
• Infrared radiation is emitted till all the objects in the room are warmed up and start reflecting the radiation.
• The advantage of this method is that this type of heating prevents issues due to damp and
draughts. This type of heating is a modern method to old heating mechanisms where people used fire in
stone, tiled or clay stoves to heat up their houses.
16. TRACKING SYSTEM
This is used on missile
guidance system
where the target is
tracked using the
infrared radiation it
emits
For example, an infrared
emitter (transmitter) is
placed on the object that
needs to be tracked and
signals/radiation from this
emitter are received by
infrared receivers that are
connected to a computer
system with display unit, that
will display the location of
the object.
THERMOGRAPHY
used to determine the
temperature of the
objects remotely and is
used in military and
industries
This is a branch of
science that deals
with acquiring and
analyzing thermal
information from
remote thermal
imaging devices
This works on the
principle that
infrared radiation
is emitted by all
bodies and these
radiations are
detected by
thermography
cameras.