Waves for Beginners
•Download as PPTX, PDF•
0 likes•328 views
In this presentation we will learn about the arts of a wave, frequency vs wavelength, and AM vs FM radio waves.
Report
Share
Report
Share
Recommended
Frequency
Frequency is defined as the number of occurrences of a repeating event per unit time, with the standard SI unit being hertz (Hz). One hertz is equal to one cycle per second. Period is the reciprocal of frequency and is measured in units of time. Frequency and wavelength are closely related, with higher frequencies having shorter wavelengths and lower frequencies having longer wavelengths. There are several methods for measuring frequency, including counting cycles, using a stroboscope, or a frequency counter for higher frequencies. Sound propagates as pressure and displacement waves, with the audible frequency range for humans being 20Hz to 20,000Hz. Electromagnetic waves are classified into different frequency bands that have characteristic properties and applications.
Lecture №2
This document discusses radio wave propagation for medium range communication. It covers the following key points:
1. Radio frequencies between 1-30 MHz are used for medium range communication. This allows efficient radiation from practical transmitter antennas between 1/4 and 1 wavelength in size.
2. There are three main propagation mechanisms: line of sight, ground wave, and sky wave. Line of sight and ground waves are used above 50 MHz for terrestrial communication. Sky waves reflect off the ionosphere and are used from 1-30 MHz for long distance communication.
3. The radio frequency spectrum is divided into bands like HF, VHF, UHF etc. with different applications. Wavelength decreases with increasing frequency based on the
Wave speed, frequency and wavelength
The document discusses wave speed, frequency, and wavelength. It defines these key terms and their relationships using the equation speed = wavelength x frequency. It then provides examples of using this equation to calculate speed, wavelength, or frequency when two of the three values are known. Sample problems are worked through demonstrating how to apply the equation to different wave scenarios.
Waves
This document discusses different types of waves including longitudinal waves, transverse waves, and how their amplitude, wavelength, frequency, velocity, and other properties are defined. It explains that longitudinal waves have particles that vibrate parallel to the direction of energy transport, while transverse waves have particles that vibrate perpendicular to the direction of energy transport. It also covers the concepts of reflections, refraction, and how waves behave when passing between different media.
Physics 101 lo1
Alex is practicing ribbon dancing and creates a continuous wave that travels along her ribbon in simple harmonic motion. The graph shows one cycle of the ribbon wave passing through point Z. The summary finds:
(1) The amplitude is 0.5m, the maximum displacement from the horizontal axis.
(2) The wavelength is 2.5m, the distance between consecutive crests/troughs.
(3) The wave number is 4π/5 rad/m, representing the distance traveled within one wavelength.
(4) The period is 4s and frequency is 1/4 Hz, the time and rate of one full wave passing point Z.
(5) The wave speed is 5/
Chirp spread spectrum communication
This document discusses Chirp Spread Spectrum (CSS) communication. It defines key terms like spectrum, spread spectrum, and chirps. It explains that chirps are signals where frequency increases or decreases over time. CSS uses chirp signals that are spread over a wide bandwidth for communication. It provides several benefits - high robustness against interference due to its wide bandwidth, resistance to multipath fading and Doppler shift, low power consumption, and low latency.
Chapter 2 The Nature of Sound
1. Sound is caused by changes in air pressure that create sound waves. These waves have properties like amplitude, frequency, wavelength, and phase.
2. Frequency refers to the number of pressure change cycles per second and is measured in Hertz. Higher frequencies are heard as higher pitches while lower frequencies have lower pitches.
3. Harmonics are integer multiples of the fundamental frequency which determine the tone quality or timbre of different instruments and voices.
Waves
WAVES
INTRODUCTION
A wave is a period disturbance which transfers energy from one place to another.
There are two types of waves:
1. Mechanical waves
2. Electromagnetic waves
Recommended
Frequency
Frequency is defined as the number of occurrences of a repeating event per unit time, with the standard SI unit being hertz (Hz). One hertz is equal to one cycle per second. Period is the reciprocal of frequency and is measured in units of time. Frequency and wavelength are closely related, with higher frequencies having shorter wavelengths and lower frequencies having longer wavelengths. There are several methods for measuring frequency, including counting cycles, using a stroboscope, or a frequency counter for higher frequencies. Sound propagates as pressure and displacement waves, with the audible frequency range for humans being 20Hz to 20,000Hz. Electromagnetic waves are classified into different frequency bands that have characteristic properties and applications.
Lecture №2
This document discusses radio wave propagation for medium range communication. It covers the following key points:
1. Radio frequencies between 1-30 MHz are used for medium range communication. This allows efficient radiation from practical transmitter antennas between 1/4 and 1 wavelength in size.
2. There are three main propagation mechanisms: line of sight, ground wave, and sky wave. Line of sight and ground waves are used above 50 MHz for terrestrial communication. Sky waves reflect off the ionosphere and are used from 1-30 MHz for long distance communication.
3. The radio frequency spectrum is divided into bands like HF, VHF, UHF etc. with different applications. Wavelength decreases with increasing frequency based on the
Wave speed, frequency and wavelength
The document discusses wave speed, frequency, and wavelength. It defines these key terms and their relationships using the equation speed = wavelength x frequency. It then provides examples of using this equation to calculate speed, wavelength, or frequency when two of the three values are known. Sample problems are worked through demonstrating how to apply the equation to different wave scenarios.
Waves
This document discusses different types of waves including longitudinal waves, transverse waves, and how their amplitude, wavelength, frequency, velocity, and other properties are defined. It explains that longitudinal waves have particles that vibrate parallel to the direction of energy transport, while transverse waves have particles that vibrate perpendicular to the direction of energy transport. It also covers the concepts of reflections, refraction, and how waves behave when passing between different media.
Physics 101 lo1
Alex is practicing ribbon dancing and creates a continuous wave that travels along her ribbon in simple harmonic motion. The graph shows one cycle of the ribbon wave passing through point Z. The summary finds:
(1) The amplitude is 0.5m, the maximum displacement from the horizontal axis.
(2) The wavelength is 2.5m, the distance between consecutive crests/troughs.
(3) The wave number is 4π/5 rad/m, representing the distance traveled within one wavelength.
(4) The period is 4s and frequency is 1/4 Hz, the time and rate of one full wave passing point Z.
(5) The wave speed is 5/
Chirp spread spectrum communication
This document discusses Chirp Spread Spectrum (CSS) communication. It defines key terms like spectrum, spread spectrum, and chirps. It explains that chirps are signals where frequency increases or decreases over time. CSS uses chirp signals that are spread over a wide bandwidth for communication. It provides several benefits - high robustness against interference due to its wide bandwidth, resistance to multipath fading and Doppler shift, low power consumption, and low latency.
Chapter 2 The Nature of Sound
1. Sound is caused by changes in air pressure that create sound waves. These waves have properties like amplitude, frequency, wavelength, and phase.
2. Frequency refers to the number of pressure change cycles per second and is measured in Hertz. Higher frequencies are heard as higher pitches while lower frequencies have lower pitches.
3. Harmonics are integer multiples of the fundamental frequency which determine the tone quality or timbre of different instruments and voices.
Waves
WAVES
INTRODUCTION
A wave is a period disturbance which transfers energy from one place to another.
There are two types of waves:
1. Mechanical waves
2. Electromagnetic waves
Waves and Wave Properties--Teach Engineering
This document defines and explains key properties and concepts related to waves. It begins by defining a wave as a disturbance that transfers energy through a medium from one location to another without transferring matter. It describes two main types of waves: transverse waves, where the medium moves perpendicular to the wave direction, and longitudinal or compressional waves, where the medium moves parallel to the wave direction. The document then outlines several important wave properties, including wavelength, frequency, amplitude, speed, and how waves can change direction through reflection, refraction, and diffraction processes. It provides mathematical relationships to define these concepts.
Waves Intro
Waves transport energy through a medium rather than matter. There are two main types of waves: transverse waves, where the medium moves perpendicular to the wave's direction of travel, and longitudinal waves, where the medium moves parallel to the direction of travel. Key wave parameters include amplitude, wavelength, frequency, period, and speed. The wavelength is the distance between two equivalent points on consecutive waves, frequency is the number of waves passing a point per second, and speed depends on the properties of the medium and can be calculated as speed equals wavelength times frequency.
Properties Of Waves
This document summarizes key properties of waves. It defines amplitude as the maximum distance a wave travels from the rest position, measured by up/down motion for transverse waves and compression for longitudinal waves. Wavelength is defined as the distance between corresponding parts of a wave. Frequency is defined as the number of waves passing a point per unit of time, measured in Hertz. Speed, wavelength and frequency are related through the equation: Speed = Wavelength x Frequency. A mini lab is described to measure these properties using a rope.
Medical Equipment Section2
This document discusses key concepts in ultrasound imaging including wave interference and diffraction, beam formation using planar and focused transducers, factors affecting resolution, and harmonic imaging techniques. It provides examples of calculations for beam properties like near-field length and beam width at focus. Non-linear wave propagation effects at high pressures are described along with their use in harmonic imaging to reduce noise and improve depth penetration. Key intensity metrics used for ultrasound safety are also defined.
Environmental Engineering
This document discusses the key characteristics of sound and how it is measured. It defines frequency, time period, intensity, wavelength, sound power, sound pressure, sound pressure level, amplitude, and decibel. Frequency is the number of vibrations per second, measured in Hertz. Intensity is the amount of sound energy received per unit area and time, measured in watts per square meter. Sound pressure level converts sound pressure to the decibel scale. Common tools for measuring sound include measuring intensity in decibels using a reference intensity of 10^-12 watts per square meter. The document also briefly discusses the permissible ambient noise levels defined for different zones in India.
Waves ch. 8
A wave is a disturbance that travels through a medium from one location to another. There are two main types of waves: mechanical waves, which require a physical medium and can be either longitudinal or transverse; and electromagnetic waves like light, which do not require a medium. Mechanical waves involve particle motion parallel to the direction of the wave for longitudinal waves or perpendicular for transverse waves. Wave properties include amplitude, wavelength, frequency, and speed. Waves can interfere constructively or destructively depending on if peaks and troughs align.
Untitleddocument
Two submarines emit radar waves - one moving at 1km/s towards the other stationary one. The moving submarine would receive a wavelength half the original length due to the Doppler effect, which increases the effective speed of sound received to account for the submarine's motion adding to the speed of the echo return.
Sci 1010 chapter 6
This document summarizes key concepts about waves from several sections of a physics textbook chapter. It discusses how waves transfer energy through different mediums without transferring matter. It defines important wave properties like wavelength, frequency, amplitude, and speed. It describes the two main types of waves as longitudinal and transverse. Examples are given like sound waves which are longitudinal and light waves which are transverse. The document also summarizes electromagnetic radiation, sound waves, and applications of wave phenomena such as resonance, the Doppler effect, and standing waves.
Chapter 3
The document discusses bandwidth and how it relates to transmitting signals through communication channels. It defines bandwidth as the range of frequencies a signal or channel can carry. For an analog signal, bandwidth is the maximum frequency minus the minimum frequency. The bandwidth required for a digital signal is 2 times the highest signaling rate. Time division multiplexing allows multiple calls to be transmitted simultaneously by dividing the channel into time slots.
1.4 diffraction - Pembelauan Gelombang Fizik SPM
The document discusses the diffraction of waves, including water waves, light waves, and sound waves. It provides details on experiments investigating how diffraction is affected by the size of an aperture or obstacle and the wavelength of the waves. The key points are:
1) Diffraction occurs when waves pass through a small aperture or around a small obstacle, causing the waves to spread out.
2) The effect of diffraction is more obvious when the aperture/obstacle size is small and the wavelength is large.
3) Experiments with water waves showed greater diffraction effects for smaller apertures/obstacles and lower wave frequencies.
Waves
This document discusses different types of waves, their properties, and how they transfer energy. There are two main kinds of waves: transverse waves, where particles move perpendicular to the wave direction, and longitudinal waves, where particles move parallel. Waves also require a medium and can be mechanical, using materials, or electromagnetic, moving through empty space. Key wave properties include amplitude, wavelength, frequency, and speed, with the speed of a wave relating to its wavelength and frequency through the equation: Speed = Wavelength x Frequency.
Class vii physics waves
This document discusses the characteristics of waves. It describes two main types of waves: transverse waves, where the medium moves perpendicular to the direction of wave motion, and longitudinal waves, where the medium moves parallel to the direction of wave motion. Key wave characteristics are defined, such as wavelength, amplitude, frequency, and velocity. The relationship between these characteristics is expressed using the wave velocity formula: velocity = wavelength x frequency. Examples are provided to demonstrate how to use this formula to calculate an unknown characteristic.
Phys 101 lo3
This Learning Objective gives a broad look at the basics of Harmonic Waves. Definitions, equations and examples of basic clicker questions are provided as well as the answers and the solutions as to how these questions are properly done.
Sound
The document discusses sound and ultrasound. It defines the audible range of human hearing as 20 Hz to 20,000 Hz. Frequencies above 20,000 Hz are ultrasound, while frequencies below 20 Hz are infrasound. The ear detects sound waves that travel through the outer, middle, and inner ear to the brain. Sources of sound include vibrating strings and air columns, as seen in instruments like guitars and wind instruments. The Doppler effect causes changes in frequency or wavelength for an observer moving relative to a sound source. Ultrasound is used in nondestructive testing and medical imaging techniques like Doppler echocardiography. Infrasound sources include volcanic eruptions and wind flowing around ocean waves.
Sc Ience
1) Sound is a physical phenomenon that stimulates the sense of hearing in humans through vibrations between 15-20,000 Hz reaching the inner ear. The speed of sound varies but travels around 1,190 km/h through dry air.
2) The frequency and amplitude of a sound wave determine its pitch and loudness. Frequency is measured in Hertz and refers to the number of vibrations or cycles per second. Amplitude is the degree of motion of air molecules and corresponds to changes in air pressure.
3) There are two main types of sound waves: transverse waves, where the vibration is perpendicular to the direction of travel, and longitudinal waves, where the vibration is parallel to the direction of travel.
Waves and Sound
1. The document discusses waves and sound, including the nature of waves, types of waves (transverse, longitudinal), properties of waves like amplitude, wavelength, frequency, and speed.
2. It also covers the nature of sound waves, which are longitudinal waves that transfer energy through variations in pressure. The speed of sound depends on the medium and can be calculated using the material properties.
3. Sound intensity is defined in terms of power per unit area, and is perceived as loudness. Intensity levels are measured in decibels on a logarithmic scale compared to a reference value.
Intro to waves
This document defines key terms related to waves, including transverse and longitudinal waves. It explains that waves can transfer energy and information through a medium without the medium itself moving. Transverse waves involve oscillations perpendicular to the direction of energy transfer, while longitudinal waves involve oscillations parallel to it. Key wave measurements are defined, such as amplitude, wavelength, frequency, and period. The relationship between these variables is described by the wave equation, which relates wave speed, frequency, and wavelength. Examples are given of different types of waves and questions are provided for students to practice using the wave equation.
Sound
This document provides information about sound waves and how they propagate. It discusses longitudinal waves, pressure variations in sound waves, factors that determine the speed of sound in different mediums, wavefronts, frequency and pitch, how the human ear detects sound, and the range of human hearing. Examples of different speeds of sound in various materials like air, water, steel and glass are given.
Doppler Effect and Blueshift and Redshift
The Doppler effect is an apparent change in frequency or wavelength of a wave caused by relative motion between the source and observer. The document discusses the Doppler effect as it relates to sound waves and light waves, explaining that a moving source toward the observer results in a higher frequency (blueshift), while a moving source away results in a lower frequency (redshift). It also discusses cosmological redshift caused by the expansion of the universe.
Frequency spectrum of periodic signal..
This document discusses frequency domain representation of periodic signals. It defines spectrum as the measurable range of a physical property like frequency or wavelength. A signal's frequency domain representation plots amplitude and phase versus frequency, rather than versus time as in the time domain. The frequency domain reveals the frequencies and proportions of frequency components that make up the signal's shape. It can be obtained from the signal's Fourier series or Fourier transform. Sinusoids in continuous and discrete time are used as examples to demonstrate how their frequency domain representations graph amplitude versus frequency and phase versus frequency.
Nt1310 Tv Channels
The document discusses deposition of hybrid coatings using atmospheric pressure plasma enhanced chemical vapor deposition (AP-PECVD). AP-PECVD allows for deposition using a combination of organic and inorganic precursors or organic precursors with embedded biomolecules. Different plasma production methods are mentioned, including microwave, radio frequency, and arc plasma. Microwave plasma uses a 2.45 GHz electric field to ionize gas and produce a non-isothermal plasma through electron acceleration. This technique has been used to deposit conductive films from organic precursors.
Light and Sight
Light enters a diamond and undergoes total internal reflection within the diamond due to the high refractive index of diamond. This causes the light to exit the diamond at different angles, producing the sparkling effect. The facets on cut diamonds are designed to maximize the internal reflections and sparkling. Diamonds appear white due to dispersion of light into the visible spectrum by the crystal structure of diamond.
More Related Content
What's hot
Waves and Wave Properties--Teach Engineering
This document defines and explains key properties and concepts related to waves. It begins by defining a wave as a disturbance that transfers energy through a medium from one location to another without transferring matter. It describes two main types of waves: transverse waves, where the medium moves perpendicular to the wave direction, and longitudinal or compressional waves, where the medium moves parallel to the wave direction. The document then outlines several important wave properties, including wavelength, frequency, amplitude, speed, and how waves can change direction through reflection, refraction, and diffraction processes. It provides mathematical relationships to define these concepts.
Waves Intro
Waves transport energy through a medium rather than matter. There are two main types of waves: transverse waves, where the medium moves perpendicular to the wave's direction of travel, and longitudinal waves, where the medium moves parallel to the direction of travel. Key wave parameters include amplitude, wavelength, frequency, period, and speed. The wavelength is the distance between two equivalent points on consecutive waves, frequency is the number of waves passing a point per second, and speed depends on the properties of the medium and can be calculated as speed equals wavelength times frequency.
Properties Of Waves
This document summarizes key properties of waves. It defines amplitude as the maximum distance a wave travels from the rest position, measured by up/down motion for transverse waves and compression for longitudinal waves. Wavelength is defined as the distance between corresponding parts of a wave. Frequency is defined as the number of waves passing a point per unit of time, measured in Hertz. Speed, wavelength and frequency are related through the equation: Speed = Wavelength x Frequency. A mini lab is described to measure these properties using a rope.
Medical Equipment Section2
This document discusses key concepts in ultrasound imaging including wave interference and diffraction, beam formation using planar and focused transducers, factors affecting resolution, and harmonic imaging techniques. It provides examples of calculations for beam properties like near-field length and beam width at focus. Non-linear wave propagation effects at high pressures are described along with their use in harmonic imaging to reduce noise and improve depth penetration. Key intensity metrics used for ultrasound safety are also defined.
Environmental Engineering
This document discusses the key characteristics of sound and how it is measured. It defines frequency, time period, intensity, wavelength, sound power, sound pressure, sound pressure level, amplitude, and decibel. Frequency is the number of vibrations per second, measured in Hertz. Intensity is the amount of sound energy received per unit area and time, measured in watts per square meter. Sound pressure level converts sound pressure to the decibel scale. Common tools for measuring sound include measuring intensity in decibels using a reference intensity of 10^-12 watts per square meter. The document also briefly discusses the permissible ambient noise levels defined for different zones in India.
Waves ch. 8
A wave is a disturbance that travels through a medium from one location to another. There are two main types of waves: mechanical waves, which require a physical medium and can be either longitudinal or transverse; and electromagnetic waves like light, which do not require a medium. Mechanical waves involve particle motion parallel to the direction of the wave for longitudinal waves or perpendicular for transverse waves. Wave properties include amplitude, wavelength, frequency, and speed. Waves can interfere constructively or destructively depending on if peaks and troughs align.
Untitleddocument
Two submarines emit radar waves - one moving at 1km/s towards the other stationary one. The moving submarine would receive a wavelength half the original length due to the Doppler effect, which increases the effective speed of sound received to account for the submarine's motion adding to the speed of the echo return.
Sci 1010 chapter 6
This document summarizes key concepts about waves from several sections of a physics textbook chapter. It discusses how waves transfer energy through different mediums without transferring matter. It defines important wave properties like wavelength, frequency, amplitude, and speed. It describes the two main types of waves as longitudinal and transverse. Examples are given like sound waves which are longitudinal and light waves which are transverse. The document also summarizes electromagnetic radiation, sound waves, and applications of wave phenomena such as resonance, the Doppler effect, and standing waves.
Chapter 3
The document discusses bandwidth and how it relates to transmitting signals through communication channels. It defines bandwidth as the range of frequencies a signal or channel can carry. For an analog signal, bandwidth is the maximum frequency minus the minimum frequency. The bandwidth required for a digital signal is 2 times the highest signaling rate. Time division multiplexing allows multiple calls to be transmitted simultaneously by dividing the channel into time slots.
1.4 diffraction - Pembelauan Gelombang Fizik SPM
The document discusses the diffraction of waves, including water waves, light waves, and sound waves. It provides details on experiments investigating how diffraction is affected by the size of an aperture or obstacle and the wavelength of the waves. The key points are:
1) Diffraction occurs when waves pass through a small aperture or around a small obstacle, causing the waves to spread out.
2) The effect of diffraction is more obvious when the aperture/obstacle size is small and the wavelength is large.
3) Experiments with water waves showed greater diffraction effects for smaller apertures/obstacles and lower wave frequencies.
Waves
This document discusses different types of waves, their properties, and how they transfer energy. There are two main kinds of waves: transverse waves, where particles move perpendicular to the wave direction, and longitudinal waves, where particles move parallel. Waves also require a medium and can be mechanical, using materials, or electromagnetic, moving through empty space. Key wave properties include amplitude, wavelength, frequency, and speed, with the speed of a wave relating to its wavelength and frequency through the equation: Speed = Wavelength x Frequency.
Class vii physics waves
This document discusses the characteristics of waves. It describes two main types of waves: transverse waves, where the medium moves perpendicular to the direction of wave motion, and longitudinal waves, where the medium moves parallel to the direction of wave motion. Key wave characteristics are defined, such as wavelength, amplitude, frequency, and velocity. The relationship between these characteristics is expressed using the wave velocity formula: velocity = wavelength x frequency. Examples are provided to demonstrate how to use this formula to calculate an unknown characteristic.
Phys 101 lo3
This Learning Objective gives a broad look at the basics of Harmonic Waves. Definitions, equations and examples of basic clicker questions are provided as well as the answers and the solutions as to how these questions are properly done.
Sound
The document discusses sound and ultrasound. It defines the audible range of human hearing as 20 Hz to 20,000 Hz. Frequencies above 20,000 Hz are ultrasound, while frequencies below 20 Hz are infrasound. The ear detects sound waves that travel through the outer, middle, and inner ear to the brain. Sources of sound include vibrating strings and air columns, as seen in instruments like guitars and wind instruments. The Doppler effect causes changes in frequency or wavelength for an observer moving relative to a sound source. Ultrasound is used in nondestructive testing and medical imaging techniques like Doppler echocardiography. Infrasound sources include volcanic eruptions and wind flowing around ocean waves.
Sc Ience
1) Sound is a physical phenomenon that stimulates the sense of hearing in humans through vibrations between 15-20,000 Hz reaching the inner ear. The speed of sound varies but travels around 1,190 km/h through dry air.
2) The frequency and amplitude of a sound wave determine its pitch and loudness. Frequency is measured in Hertz and refers to the number of vibrations or cycles per second. Amplitude is the degree of motion of air molecules and corresponds to changes in air pressure.
3) There are two main types of sound waves: transverse waves, where the vibration is perpendicular to the direction of travel, and longitudinal waves, where the vibration is parallel to the direction of travel.
Waves and Sound
1. The document discusses waves and sound, including the nature of waves, types of waves (transverse, longitudinal), properties of waves like amplitude, wavelength, frequency, and speed.
2. It also covers the nature of sound waves, which are longitudinal waves that transfer energy through variations in pressure. The speed of sound depends on the medium and can be calculated using the material properties.
3. Sound intensity is defined in terms of power per unit area, and is perceived as loudness. Intensity levels are measured in decibels on a logarithmic scale compared to a reference value.
Intro to waves
This document defines key terms related to waves, including transverse and longitudinal waves. It explains that waves can transfer energy and information through a medium without the medium itself moving. Transverse waves involve oscillations perpendicular to the direction of energy transfer, while longitudinal waves involve oscillations parallel to it. Key wave measurements are defined, such as amplitude, wavelength, frequency, and period. The relationship between these variables is described by the wave equation, which relates wave speed, frequency, and wavelength. Examples are given of different types of waves and questions are provided for students to practice using the wave equation.
Sound
This document provides information about sound waves and how they propagate. It discusses longitudinal waves, pressure variations in sound waves, factors that determine the speed of sound in different mediums, wavefronts, frequency and pitch, how the human ear detects sound, and the range of human hearing. Examples of different speeds of sound in various materials like air, water, steel and glass are given.
Doppler Effect and Blueshift and Redshift
The Doppler effect is an apparent change in frequency or wavelength of a wave caused by relative motion between the source and observer. The document discusses the Doppler effect as it relates to sound waves and light waves, explaining that a moving source toward the observer results in a higher frequency (blueshift), while a moving source away results in a lower frequency (redshift). It also discusses cosmological redshift caused by the expansion of the universe.
Frequency spectrum of periodic signal..
This document discusses frequency domain representation of periodic signals. It defines spectrum as the measurable range of a physical property like frequency or wavelength. A signal's frequency domain representation plots amplitude and phase versus frequency, rather than versus time as in the time domain. The frequency domain reveals the frequencies and proportions of frequency components that make up the signal's shape. It can be obtained from the signal's Fourier series or Fourier transform. Sinusoids in continuous and discrete time are used as examples to demonstrate how their frequency domain representations graph amplitude versus frequency and phase versus frequency.
What's hot (20)
Similar to Waves for Beginners
Nt1310 Tv Channels
The document discusses deposition of hybrid coatings using atmospheric pressure plasma enhanced chemical vapor deposition (AP-PECVD). AP-PECVD allows for deposition using a combination of organic and inorganic precursors or organic precursors with embedded biomolecules. Different plasma production methods are mentioned, including microwave, radio frequency, and arc plasma. Microwave plasma uses a 2.45 GHz electric field to ionize gas and produce a non-isothermal plasma through electron acceleration. This technique has been used to deposit conductive films from organic precursors.
Light and Sight
Light enters a diamond and undergoes total internal reflection within the diamond due to the high refractive index of diamond. This causes the light to exit the diamond at different angles, producing the sparkling effect. The facets on cut diamonds are designed to maximize the internal reflections and sparkling. Diamonds appear white due to dispersion of light into the visible spectrum by the crystal structure of diamond.
Waves Presentation
This document provides an overview of key concepts related to waves, including:
- Waves carry energy through oscillations without carrying matter. Amplitude determines energy level.
- Transverse waves oscillate perpendicular to the direction of travel, while longitudinal waves oscillate parallel.
- The speed of a wave is calculated using the equation speed = wavelength x frequency.
- Electromagnetic waves include visible light, radio waves, microwaves and more, traveling at the speed of light. Different frequencies have different wavelengths and applications.
Eidws 113 technical fundamentals
The document defines terms and concepts related to electromagnetic spectrum, radio wave propagation, modulation techniques, radar fundamentals, and signals intelligence collection. It describes the frequency bands of the electromagnetic spectrum and their common uses. It also defines key terms like frequency, wavelength, modulation, demodulation, bandwidth, and propagation effects in the atmosphere. Modulation techniques like AM, FM, USB/LSB, and CW are explained. Radar fundamentals covered include terms like PRF, PW, scan rate, bearing, and the functions of air search, surface search, and fire control radars. The document distinguishes between operational intelligence (OPELINT) and technical intelligence (TECHELINT) collection.
Telecommunications
Telecommunications refers to technologies used to convey information over distances. It includes systems like the telephone network, mobile phones, satellite communications, computer networks, the internet, and radio/television broadcasting. While communication has existed since ancient times using methods like drums and smoke signals, modern telecommunications began with inventions in the 19th century like the telegraph and telephone. Today's telecommunications industry continues developing new technologies and services, applying fundamental principles from early telephony and radio.
Phase noise
Phase noise refers to random fluctuations in the phase of an oscillator's waveform that cause frequency instability. It can be measured as the power spectral density of the phase deviations as a function of frequency offset from the carrier. Real oscillators generate noise sidebands rather than a pure sine wave, with the phase noise spreading the power across adjacent frequencies. Phase noise is closely related to jitter and is typically expressed in dBc/Hz units representing noise power within a 1 Hz bandwidth at certain offsets from the carrier frequency.
Oj2423402345
This document summarizes a research paper that designed a low-cost and efficient strip line band pass filter for Bluetooth applications. The paper presents the design of a band pass filter with a center frequency of 2.4GHz and bandwidth of 150MHz. The filter was designed using simulation software and tested on a spectrum analyzer. Strip line band pass filters can reduce size while providing good pass band gain and stop band attenuation characteristics. The designed filter meets the bandwidth needs for Bluetooth transmission and can be integrated into Bluetooth transceiver systems.
Design and Develop of Sea Wave Power Plant
The energy of sea waves can be absorbed by wave energy converters in a variety of manners, but in every case
the transferred power is highly fluctuating in several time-scales, especially the wave-to-wave or the wave group
time-scales. In most devices developed or considered so far, the final product is electrical energy to be supplied
to a grid. This paper discusses the use of sea wave energy with the help of oscillating column. The mechanism
converts the wave energy in to electrical power by converting the oscillating motion of waves in to rotary
motion. Using compression ring we can store the power produced by the impact. This stored energy can be
utilized in other strokes. The sea, which covers three quarters of the world’s surface, has been little utilized to
meet the peoples’ energy needs.
Radio Broadcasting Technology
This presentation is on the concepts related to the radio broadcasting, transmission chain, broadcasting studio etc.
Waves
This document summarizes key concepts about waves, including:
1. There are two types of waves - transverse waves where displacement is perpendicular to direction of travel, and longitudinal waves where displacement is parallel.
2. Wave properties include amplitude, wavelength, period, frequency, and speed. The frequency is the number of waves passing per second, while speed is the distance traveled per second.
3. Sound waves are longitudinal waves that travel via vibrations in air or other materials. Electromagnetic waves like light can travel through empty space.
4. Wave phenomena include reflection at boundaries, refraction when speed changes, interference from adding or subtracting waves, and diffraction spreading waves passing through openings.
Ultasonic testing
The document discusses ultrasonic testing techniques. It describes how ultrasonic pulses are transmitted into a material and reflections from internal imperfections or surfaces are detected. The time interval between pulse transmission and reception provides clues about the material's internal structure. Common techniques include pulse-echo testing and using transducers to generate and detect longitudinal or shear waves. Reflected signals are visualized on an oscilloscope as A-scans, B-scans, or C-scans to evaluate material features.
8.3 analysing sound waves
A cathode ray oscilloscope can be used to analyze sound waves by displaying the electrical signals produced by a microphone. It can compare waves with different amplitudes, showing that waves with a larger amplitude carry more energy and are produced by louder sounds. It can also compare waves with different frequencies, demonstrating that waves with peaks closer together have a higher frequency and pitch.
2D wave interference
This document discusses two-dimensional interference patterns that arise when waves propagate in different directions. It explains that constructive interference occurs when the path difference between two waves is an integer multiple of the wavelength, causing the amplitudes to add. Destructive interference happens when the path difference is a half-integer multiple of the wavelength, reducing the amplitude. Formulas are provided for calculating the conditions of constructive and destructive interference between two waves.
Similar to Waves for Beginners (13)
Recently uploaded
The History of Stoke Newington Street Names
Presented at the Stoke Newington Literary Festival on 9th June 2024
www.StokeNewingtonHistory.com
How to Fix the Import Error in the Odoo 17
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
Advanced Java[Extra Concepts, Not Difficult].docx
This is part 2 of my Java Learning Journey. This contains Hashing, ArrayList, LinkedList, Date and Time Classes, Calendar Class and more.
Walmart Business+ and Spark Good for Nonprofits.pdf
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...Nguyen Thanh Tu Collection
https://app.box.com/s/y977uz6bpd3af4qsebv7r9b7s21935vdMain Java[All of the Base Concepts}.docx
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
How to deliver Powerpoint Presentations.pptx
"How to make and deliver dynamic presentations by making it more interactive to captivate your audience attention"
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...Nguyen Thanh Tu Collection
https://app.box.com/s/qhtvq32h4ybf9t49ku85x0n3xl4jhr15How to Manage Your Lost Opportunities in Odoo 17 CRM
Odoo 17 CRM allows us to track why we lose sales opportunities with "Lost Reasons." This helps analyze our sales process and identify areas for improvement. Here's how to configure lost reasons in Odoo 17 CRM
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptxMohd Adib Abd Muin, Senior Lecturer at Universiti Utara Malaysia
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
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
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...National Information Standards Organization (NISO)
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.Recently uploaded (20)
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP BỔ TRỢ TIẾNG ANH 8 CẢ NĂM - GLOBAL SUCCESS - NĂM HỌC 2023-2024 (CÓ FI...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
BÀI TẬP DẠY THÊM TIẾNG ANH LỚP 7 CẢ NĂM FRIENDS PLUS SÁCH CHÂN TRỜI SÁNG TẠO ...
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
NEWSPAPERS - QUESTION 1 - REVISION POWERPOINT.pptx
How to Manage Your Lost Opportunities in Odoo 17 CRM
How to Manage Your Lost Opportunities in Odoo 17 CRM
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Waves for Beginners
- 2. wavelength (λ) crest or peak trough amplitude Parts of a Wave
- 3. A longitudinal wave causes a disturbance in the direction of its travel. Sound waves are an example. A transverse wave causes a disturbance perpendicular to the direction of its travel. Light waves are an example. By Christophe Dang Ngoc Chan (cdang) (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons By Christophe Dang Ngoc Chan (cdang) (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons Longitudinal vs Transverse Waves Waves can be categorized according to the direction of the effect of the disturbance relative to the direction of travel.
- 4. Wavelength vs Frequency Averse at the German language Wikipedia [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons A wavelength is the distance between two successive points on a wave. The Greek letter of the alphabet “lambda-λ” is used to represent wavelength. The frequency of a wave and its wavelength are inversely proportional. As a wave’s wavelength decreases its frequency increases and vice versa. By No machine-readable author provided. Superborsuk assumed (based on copyright claims). [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons The frequency of a wave is the amount of wavelengths that pass a given point each second. The frequency of a wave is measured in Hertz (Hz).
- 5. Frequency Modulation vs Amplitude Modulation By Berserkerus (Own work) [CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons Frequency modulation (F.M.) is the encoding of information in a radio wave by varying the instantaneous frequency of the wave whereas amplitude modulation (A.M.) is the encoding of information in a radio wave by varying the instantaneous amplitude of the wave.
- 6. Wavelength and Frequency The wavelength and frequency of a wave are inversely proportional to one another. As one increases the other decrease and vice versa. Wavelength Frequency Wavelength Frequency