Radiations from mobile
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Assalam o Alaikum! this is a presentation where you can get to know about how the mobiles are affecting our daily life and how we can cope with them up. thanks
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This presentation summarizes the health hazards posed by electromagnetic waves. It discusses how radiation is divided into ionizing and non-ionizing categories. The electromagnetic spectrum is shown ranging from gamma rays to radio waves. Biological hazards from radiation include burns and skin cancer from high levels. Extremely high power levels can induce electric currents strong enough to cause electric shocks or sparks. Different frequency ranges are known to have specific effects, such as microwaves causing heating, burning or blistering at high power levels. Population studies have found some associations between electromagnetic field exposure and general health issues or specific conditions like ALS. International safety standards are set by organizations like the WHO.
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Electromagnetic Radiation.
Radio Waves Emitted By The Cell Phone.
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Antennas On Cell Tower Transmit In The Frequency Range.
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Types Of Base Stations-operators.
Possible Health Effects Of ELF-EMF/RFR Exposure Effects & Base Station.
Illness That Have Potential Links To Phone Radiation.
Awareness Among People.
Wealth Vs Health.
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Conclusion.
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RADIATION EXPOSURE OF CELL PHONES & ITS IMPACT ON HUMANS
ELECTROMAGNETIC RADIATION
RADIO WAVES EMITTED BY THE CELL PHONE
CELL PHONE BASE STATION
ANTENNAS ON CELL TOWER TRANSMIT IN THE FREQUENCY RANGE
TYPES OF ANTENNAS –TRANSMISSION.
TYPES OF BASE STATIONS-OPERATORS.
POSSIBLE HEALTH EFFECTS OF ELF-EMF/RFR EXPOSURE EFFECTS & BASE STATION
ILLNESS THAT HAVE POTENTIAL LINKS TO PHONE RADIATION
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Radio waves transmit information such as television, internet, and music through invisible electromagnetic waves that are received by antennas and decoded into various media. Radios have a transmitter that encodes sound into sine waves and an antenna that receives the electromagnetic waves. The information is encoded in the wave pattern. Antennas receive thousands of signals at once, requiring tuners to select a particular frequency. Radio waves are used for wireless technologies, TV, phones, and some medical applications. They can travel long distances by following the Earth's curvature. Common radio frequencies include AM/FM and television bands.
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Cell towers contain antennas that receive and transmit radio signals to connect mobile phones to the cellular network. When a call is made, the mobile phone emits radio waves that are received by antennas on the nearest cell tower, which then transmits the signals to a switching center to connect the call. Cell towers can take different forms like lattice towers or disguised concealment designs, and their effective range depends on factors like antenna height and transmitter power. Current scientific evidence shows no health risks from exposure to the low radiofrequency levels emitted by cell towers and mobile devices.
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The document discusses the negative environmental and health impacts of increasing cell phone and cell tower use. It notes that unused cell phones contribute greatly to e-waste, and that cell phones and towers emit toxic heavy metals and radiation that can damage human health, wildlife populations, and the environment. Specific concerns raised include brain damage, early-onset Alzheimer's, DNA damage from radiation exposure, declining bird populations due to interference with navigation, and potential links to colony collapse disorder in bees. The document calls for reducing radiation exposure through lower tower emissions, public education on safe phone use, and relocating towers away from populated areas.
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- Mobile phones also emit radiation measured by SAR levels set by governments. India's limit is 1.6W/Kg averaged over 1 gram of tissue. Radiation can have thermal effects like heating and non-thermal effects on cell behavior.
- Biological effects of radiation exposure include sleep disruption, dizziness, heart palpitations, fatigue, and risks of infertility, ear damage, skin effects, immune system degradation, and neurodegenerative disorders.
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This document discusses different types of transmission media including fiber optic cables, radio waves, microwaves, and infrared transmission. It provides details on how each type of media transmits signals and their applications. Fiber optic cables transmit light signals over glass fibers using converters, and offer advantages like high bandwidth, low attenuation, and immunity to electromagnetic interference. Radio waves transmit signals through the air and are used for applications like radio, TV, and cordless phones. Microwaves also transmit through the air but in a line-of-sight manner and are used for cellular networks and wireless LANs. Infrared transmission uses light frequencies for short range uses like remote controls.
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The document discusses the ill effects of radiation from mobile towers, including:
1) It can damage the brain blood barrier, DNA, and increase cancer and infertility risks, especially for children and pregnant women.
2) Exposure near mobile towers is linked to neurological diseases like Alzheimer's and Parkinson's.
3) Studies show mobile tower radiation may negatively impact trees, bees, and birds and their ability to navigate and breed properly.
4) The government has initiated monitoring of mobile tower radiation levels and imposing penalties for exceeding limits but there are still concerns about long term low-level exposure risks.
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The document discusses the principles and health effects of electromagnetic radiation from cell phones and cell towers. It outlines the presentation which covers cell phone advantages and disadvantages, microwave heating principles, cell phone radiation absorption rates, cell tower antenna radiation patterns, international radiation norms, and conclusions. It provides information on specific absorption rate limits, cell phone use time limits, radiation measurement results near towers, biological effects of radiation like sleep issues and cancer risks, and concerns with current safety guidelines.
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Cell Tower Radiation Effects
Conference Paper - 'Biological effects of Cell Tower Radiation' - Neha Kumar,Prof Girish Kumar,International Symposium on Microwave and Optical Tehcnology (ISMOT 2009).
Cell Tower radiation has become of extreme concern as we are exposed to them 24x7, and one cannot do much if the tower antenna is mounted right on top of your home/school/office building etc. Radiation level measurements were carried out at various locations and the levels were found to be far above the recommended values.
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This document summarizes a study on the radiation from mobile phone towers. It discusses the radiation patterns of tower antennas and how power density decreases with distance from the tower. It also addresses the theoretical and measured radiation levels, compliance distances recommended by international standards, and the biological effects of tower radiation on humans and the environment. While mobile companies deny health risks, the document concludes that long-term exposure can pose serious health hazards and stricter radiation norms should be enforced globally.
Radio waves
Radio waves are a type of electromagnetic radiation that have wavelengths longer than infrared light. They were discovered in 1897 by Heinrich Hertz, after whom the unit of frequency is named. Radio waves are produced by alternating current circuits attached to antennas and have frequencies ranging from 300 GHz to 3 kHz. They are used for transmitting information such as sound, television signals, and data without wires for purposes like communication, GPS, Wi-Fi, and Bluetooth. While radio waves have enabled many modern technologies, prolonged exposure to high amounts may cause health issues like cancer, so it is best to limit direct exposure when possible.
Radio waves presentation
Radio waves are electromagnetic waves that can range in length from millimeters to over 100,000 km, making them one of the largest types of waves. They are used to transmit signals for radio, television, mobile phones, and other technologies. Radio waves are transmitted through antennas and received by antennas, where a tuner selects the desired frequency. Mobile phones also emit low levels of radio frequency radiation when in use. Television has transitioned from using antennas to receive radio wave signals to digital transmission of signals through networks.
Uses Of Radio Waves
James Clerk Maxwell discovered that light had electrical and magnetic properties, like radio waves. The first radio signal was sent by Guglielmo Marconi in 1895 across the English Channel. By 1899, Marconi received the letter 'S' from England to Newfoundland, demonstrating innovations in radio wave technology. Radio waves allow wireless communication through modulation of electromagnetic waves between transmitters and receivers.
Radiowaves
Radio waves are part of the electromagnetic spectrum and have the lowest frequency and longest wavelengths. They are used for Wi-Fi, TV, radio, and other wireless technologies. Ultra-high frequency (UHF) radio waves can penetrate buildings better than lower frequencies but have a shorter range; they allow for more channels by using a wider frequency band. Orthogonal frequency-division multiplexing splits signals to reduce interference. Super-high frequencies are used for mobile phones and satellites due to their small wavelengths enabling compact antennas and worldwide bandwidth. Radio waves continue to take on new uses and research may lead to improved wireless technologies.
Cellppt1
The document summarizes information about communication connections between mobile phones and the effects of cell phone radiation. It contains the following key points:
1. When a call is made, the caller's phone transmits a signal to the nearest base station, which routes the signal to a switching center to authenticate the caller and receiver IDs before sending the signal to the base station nearest the receiver.
2. Cell phone radiation is transmitted in all directions from the antenna, with most energy lost in space but some received by base stations and incident on the human head.
3. Concerns about health hazards exist because mobile phones use microwave radiation, and studies show radiation can penetrate deeper into children's skulls than adults' due
Cellphone &it’s bad effects
This document summarizes some of the potential effects of cellphone radiation. It describes how cellphones work using radio frequencies to transmit signals and may absorb radiation into the human head. It discusses measures of absorbed radiation like SAR and notes that studies show cellphone radiation can slightly increase brain temperature during a call. The document also mentions that studies have not shown cellphone radiation to affect normal heart rhythm but that implanted medical devices like pacemakers may face issues if phones are not kept a sufficient distance away.
Radio waves presentation
Radio waves are a form of electromagnetic radiation with the lowest frequency on the electromagnetic spectrum. They are used to transmit various forms of communication like TV, cell phones, radio stations, and more. Radio waves can be reflected by the ionosphere to travel long distances. There are different types of radio waves that are used for short, medium, and long-range transmissions. Radios and other devices receive radio waves through antennas and convert the signals into audio or video information to be played or displayed.
Radio waves
Radio waves transmit information such as television, internet, and music through invisible electromagnetic waves that are received by antennas and decoded into various media. Radios have a transmitter that encodes sound into sine waves and an antenna that receives the electromagnetic waves. The information is encoded in the wave pattern. Antennas receive thousands of signals at once, requiring tuners to select a particular frequency. Radio waves are used for wireless technologies, TV, phones, and some medical applications. They can travel long distances by following the Earth's curvature. Common radio frequencies include AM/FM and television bands.
Ultraviolet Presentation
Ultraviolet radiation has wavelengths between 400nm and 15nm, falling between violet light and X-rays on the electromagnetic spectrum. It is divided into UV-A from 400-320nm, UV-B from 320-280nm, and UV-C from 280-100nm, with shorter wavelengths being more energetic and potentially dangerous. UV-A passes through glass while UV-B induces vitamin D production but can cause harm from overexposure.
Effect of mobile radiation on health ppt
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This document discusses the role of electromagnetics in modern medicine and communication. It begins with an introduction to electromagnetics and how it enables technologies like radio, TV, phones, and the internet. In medicine, electromagnetics enables detection of internal issues, cancer screening, treatment of tumors and hyperthermia, and monitoring of patients. Specific tools mentioned include MRI, X-ray, and mammography machines. The document also discusses electromagnetic uses in communication like radio waves, radar, microwave transmission, and antennas used for devices like satellites. It concludes that electromagnetics has significantly improved life expectancy and communication through applications in areas like medicine, sensing, and information transmission.
Electromagnetic waves
physics presentation on the topic of electromagnetic waves. includes picture explanations and animations. It's a ready-to-use presentation
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This document discusses the potential health hazards of electromagnetic radiation from various common sources. It begins by defining electromagnetic radiation and listing some main sources like cell phones, cell towers, Wi-Fi, TV and FM towers, and microwave ovens. It then provides more details on the radiation levels and patterns from different cell phone frequencies, Wi-Fi, and TV and radio towers. The document also discusses vulnerabilities to electromagnetic radiation and results from studies measuring radiation levels near cell towers. It describes some common health problems that have been reported from exposure and the debate around whether cell phones can harm brain tissues or cause cancer.
Rf and mw radiation hazards
Microwave antennas can be adapted from conventional antennas and take advantage of the small wavelength of microwaves to use additional antenna types like horn, slot, lens, microstrip, helical and parabolic reflector antennas. The document discusses different radiation zones around antennas based on wavelength and antenna size, as well as safety considerations like specific absorption rate and hazards of electromagnetic radiation to personnel, ordnance and fuels. Guidelines are provided on permissible exposure levels from international organizations and safety limits from FCC to prevent health risks from microwave radiation.
Em spectrum
The document discusses the electromagnetic spectrum, which consists of radio waves, microwaves, infrared waves, visible light waves, ultraviolet waves, x-rays, and gamma waves. It explains that electromagnetic waves have properties of speed, frequency, and wavelength, with shorter wavelengths having higher frequencies and energies. The document provides details on each type of electromagnetic wave, their typical wavelengths, frequencies, energies, and applications such as communication technologies, cooking, sterilization, and medical imaging.
Phptb a19j.pdf
The document discusses electrosmog (non-ionizing radiation) and its effects on health. It describes how electricity supply systems, appliances, and wireless technologies generate electrosmog. While intensive exposure is known to be harmful, some biological effects may also occur from exposure below international limits. The document aims to objectively describe current research findings on health impacts and suggest ways to reduce personal exposure.
Phptb a19j.pdf
The document discusses the health effects of non-ionizing radiation, or "electrosmog", which is produced by various modern technologies and electrical devices. It states that intensive non-ionizing radiation is undisputedly harmful, but that biological effects may also occur from exposure to levels below international safety limits. In particular, some studies have found a possible increased risk of leukemia in children exposed to magnetic fields over 0.4 microtesla for long periods. The document also notes that while thermal effects from high-frequency radiation are known, more research is still needed to understand potential non-thermal health impacts at lower exposure levels. Overall, the document aims to provide factual information on electrosmog and health risks while acknowledging existing uncertainties.
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This document discusses radio waves and their uses. It defines radio waves as a type of electromagnetic radiation with wavelengths longer than infrared light that can transmit frequencies over long or short distances. Radio waves are used for technologies like mobile phones, Bluetooth, wireless networks, radio, television and more. The document describes how radio antennas receive signals and how radio waves are used in mobile devices and television transmission. It also discusses radio wave transmission methods and the importance of radio waves in modern society.
Electromagnetic Spectrum PowerPoint Presentation for Teachers/Students
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:
-
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本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
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Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
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Radiations from mobile
- 2. RADIATI0N RAYS FROM MOBILE TOWERS B Y Q A N D E E L Z A I N E B W A S T I
- 3. CONTENTS Overview RF sources Radiation pattern of cell tower antenna EMF exposure Radiation measurement near cell towers Health hazards and safety measures Conclusion
- 4. OVERVIEW • You are exposed to 100 million times more electromagnetic radiation than your grandparents were, and part of the reason is radiation from cell phone towers and microwave antennas. • Human population centers are flooded with massive amounts of powerful wireless microwave radiation. • Cell phone towers emit high-frequency radio waves, or microwaves, that can travel as far as 45 miles over level terrain.
- 5. R A D I O F R E Q U E N C Y ( R F ) S O U R C E S
- 6. R A D I AT I O N P AT T E R N S I N C E L L T O W E R A N T E N N A S
- 7. ELECTRIC & MAGNETIC FIELDS • Invisible areas of energy, often referred to as radiation, that are associated with the use of electrical power and various forms of natural and man-made lighting. • EMFs are typically grouped into one of two categories by their frequency: • Non-ionizing: low-level radiation which is generally perceived as harmless to humans • Ionizing: high-level radiation which has the potential for cellular and DNA damage
- 8. Radiation Type Definition Forms of Radiation Source Examples Non-Ionizing Low to mid-frequency radiation which is generally perceived as harmless due to its lack of potency. •Extremely Low Frequency (ELF) •Radio Frequency (RF) •Microwaves •Visual Light •Microwave ovens •Computers •House energy smart meters •Wireless (wifi) networks •Cell Phones •Bluetooth devices •Power lines •MRIs Ionizing Mid to high-frequency radiation which can, under certain circumstances, lead to cellular and or DNA damage with prolonged exposure. •Ultraviolet (UV) •X-Rays •Gamma •Sunlight •X-Rays •Some gamma rays
- 10. R A D I A T I O N M E A S U R E M E N T S N E A R C E L L T O W E R
- 11. HEALTH EFFECTS
- 12. SAFETY MEASURES Only receive X-rays that are medically necessary and limit your time in the sun.Receive be aware of emf sources and reduce exposure.Be Put your phone down when you aren’t using it.Put Use the speaker function or earbuds so it doesn’t have to be by your ear.Use Leave your phone in another room when you sleep.Leave Don’t carry your phone in a pocket.Don’t carry Keep an eye on the news for any developing research on health effects.Keep
- 13. CONCLUSION • Cell phone towers are known sources of RF, the EMFs released from them affected human health in different ways. All we can do is to not use mobile phones or electronic appliances! But it can only happen in stories. Practically, we need to protect ourselves from radiation exposure by the mentioned safety measures.
- 14. REFERENCES • https://www.slideshare.net/nehakumar01/cell-phone-and-mobile-tower-radiation- hazards • https://www.itu.int/en/ITU-T/Workshops-and- Seminars/Documents/S1P2_RS_Sharma.ppt • https://www.safespaceprotection.com/emf-health-risks/emf-health-effects/emfs-in- the-home/ • http://neha-wilcom.blogspot.com/2011/05/radiation-pattern-of-cell-tower- antenna.html • https://www.healthline.com/health/emf#takeaway