Mobile Safety
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This document discusses how mobile phone communication works and potential health risks from electromagnetic radiation. When a call is made, the caller's phone transmits a signal to the nearest base station, which routes the signal through a switching center to the receiver's base station. The receiver's phone then receives the electromagnetic waves to connect the call. However, increased mobile phone use has raised health concerns since phones emit microwave radiation. Younger children may be more at risk as their thinner skulls allow deeper penetration of radiation into the brain. Simple tips to reduce radiation exposure include using hands-free devices, holding phones away from the body, and limiting call time.
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1. When a call is initiated, an electromagnetic signal is transmitted from the caller's mobile antenna to the closest base station.
2. The base station then sends the signal to the switching center to authenticate the caller and receiver.
3. Once authenticated, the switching center transmits the signal to the base station closest to the receiver, which sends an electromagnetic wave to the receiver's mobile antenna, establishing a two-way communication connection between the two persons.Cell phonesafety1
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The document summarizes how mobile phone communication works between two devices. It involves the following steps:
1. When a call is initiated, electromagnetic signals are transmitted from the caller's mobile antenna to the closest base station.
2. The base station then sends the signal to a switching center to authenticate the caller and receiver.
3. Once authenticated, the switching center transmits the signal to the base station closest to the receiver, which sends electromagnetic waves to the receiver's mobile antenna, establishing the two-way communication connection.Mobile safety
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This document discusses how cell phone radiation is produced and transmitted. When a call is made, electromagnetic signals are sent from the caller's phone antenna to the nearest base station. The base station then routes the signal to the switching center to authenticate the caller and receiver before sending the signal to the base station closest to the receiver. The receiving base station then transmits the electromagnetic waves to establish a two-way communication connection between the two phones. Younger children are more susceptible to cell phone radiation because their thinner skulls allow for deeper penetration of the radiation into their brains. The document provides tips for reducing radiation exposure such as using hands-free devices and limiting call time.Cellppt1
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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.
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The document summarizes how mobile phone communication works between two devices. It involves the following steps:
1. When a call is initiated, electromagnetic signals are transmitted from the caller's mobile antenna to the closest base station.
2. The base station then sends the signal to a switching center to authenticate the caller and receiver.
3. Once authenticated, the switching center transmits the signal to the base station closest to the receiver, which sends electromagnetic waves to the receiver's mobile antenna, establishing the two-way communication connection.Mobile Radiation
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2. It then provides tips for reducing radiation exposure from cell phones, such as using hands-free sets, holding the phone at the bottom away from the head, positioning for best reception, and limiting call time.
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1. When a call is initiated, electromagnetic signals are transmitted from the caller's mobile antenna to the closest base station.
2. The base station then sends the signal to a switching center to authenticate the caller and receiver.
3. Once authenticated, the switching center transmits the signal to the base station closest to the receiver, which sends electromagnetic waves to the receiver's mobile antenna, establishing the two-way communication connection.Cell phone safety
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2. The base station then sends the signal to a switching center to authenticate the caller and receiver.
3. Once authenticated, the switching center transmits the signal to the base station closest to the receiver, which then sends electromagnetic waves to the receiver's mobile antenna, establishing the two-way communication connection.Mobile safety
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Mobile Safety
- 1. 油
- 2. Communication connection between two mobile When the caller start the call the electro magnetic field transmit from his mobile antenna which received by the closest base station BS. Then the signal transmit from the BS to the switching center SC in order to check the authentication of the caller and receiver. After that the SC will transmit the signal to the closest BS in the receiver side Next the BS is going to transmit electro magnetic waive which should be received be the receiver mobile antenna. Finally after the receiver open the line the two way communication connection establish between two persons. Caller (1) Receiver (2) Switching Center Base Station (2) Base Station (1)
- 3. How the radiation is produced by a cell phone? Cell phone radiation is transmitted by cell phone antenna in all directions Most of the energy lost in the space Part of the energy received by base station part of the energy is incident on human head Base Station Energy received by base station Energy lost in directions other than base station
- 4. Electro magnetic signal transmit from cell phone antenna Note: The increased use of cell phones has brought about serious concerns regarding the probable health hazards. This is because mobile phones use electromagnetic radiation in the microwave range.
- 5. Maximum Power Transmit The Federal Communications Commission sets specific absorption rate SAR standard which is acceptable power radiation for cell phones must not exceed 1.6 W/KG The lower the SAR the better the phone, from a potential health hazard There are three way to found SAR From the user manual of your mobile phone. Visit mobile manufacturers forum web site and select your mobile phone model http://www.mmfai.info/public/sar.cfm Enter Federal Communications Commission website and Write your mobile FCC ID Number in the FCC ID http://www.fcc.gov/oet/ea/fccid/
- 6. Head Temperature Raise Thermal Effect of Cell Phones
- 7. Thermal Effects Heat generated on the face by 15 minutes of cell phone use due to their electromagnetic radiation
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- 9. Radiation Penetration in the head of an adult, ten-year and five-year old When radiation hits the head, it penetrates the skull. The pictures above are the result of an experiment show how radiation penetrates the skull of an adult (25%), 10 year old (50%) and a 5 year old (75%). The younger the child the deeper the penetration due to the fact their skulls are thinner and their brains contain more fluid than adults. Radio frequencies travel through childrens brains much more easily and therefore increase the risk of cancer.
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- 12. It is not only the choice of phone, but how you use it that is important when you want to control the amount of radiation you are exposed to. Here you will find a few simple tips that can considerably reduce radiation and therefore also health risks . Consider the following when using your mobile phone
- 13. Use a handsfree set The further away from your body the phone is, the less radiation you are exposed to. Using a hands-free set is the easiest way to radically reduce the amount of radiation you are exposed to if you use a mobile phone.
- 14. Hold it at the bottom By covering large areas of the phone with your hand, you reduce its ability to send and receive signals. The phone then increases its power and transmits stronger radiation to compensate this. So hold the phone as far down as possible, so it can operate at low power.
- 15. Get in the best position You can see the signal reception strength in the display. When reception is good, the phone reduces power and radiation. If reception is poor, the phone uses maximum power and radiation.
- 16. Dont talk too long and Use regular phone if possible The radiation you are exposed to is directly related to the time you spend talking on your phone. For linger calls it is safer and cheaper to call from a regular phone.
- 17. Hazardous areas of use Dont use a mobile phone while driving a car. Stop at a safe place and talk. Dont use your mobile phone in places where there is a lot of electrical equipment, such as hospitals and aircraft. Dont bathe with your mobile phone. Dont let small children talk on your mobile phone for long periods. They are more susceptible than adults.
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