India
Information
Technology
Cell
Phone Safety Presentations
Prepared
by:
nikhil patel
Communication
connection between two mobile
1.When the caller starts the call the electromagnetic signal
transmitted from his mobile antenna is received by the closest base station
“BS”.
2.Then the signal is transmitted from the BS to the switching
center “SC” in order to authenticate the caller and receiver IDs.
3.The the SC will transmit the
signal to the BS nearest to the receiver side
4.Next the BS transmits electromagnetic signals which will be
received by the receiver’s mobile antenna.
5.Finally after the receiver opens the line the two-way
communication connection is established between the two persons.
How
is radiation produced by a cell phone?
ØCell phone radiation
is transmitted by the cell phone antenna in all directions
ØMost of the energy is
lost in space
ØPart of the energy is
received by base stations
ØPart of the energy is
incident on human head
Maximum Power Transmit
ØThe
Federal Communications Commission sets specific absorption rate “SAR” standards
for acceptable power radiation for cell phones; it must not exceed 1.6 W/KG
ØThe
lower the SAR the better the phone, from a potential health hazard point of
view
There
are three ways to find SAR values
1.From the user manual of your mobile phone.
Thermal
Effect of Cell Phones
Thermal
Effects
Heat generated on the
face by 15 minutes of cell phone use due to electromagnetic radiation
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 children’s brains
much more easily and therefore increase the risk of cancer.
|
Consider
the following when using your mobile phone
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.
Use a hands-free 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.
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.
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.
Don’t talk too long and use regular phone as much as 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.
Hazardous areas of use
ØDon’t
use a mobile phone while driving a car. Stop at a safe place and talk.
ØDon’t
use your mobile phone in places where there is a lot of electrical equipment,
such as hospitals and aircraft.
ØDon’t
bathe with your mobile phone.
ØDon’t
let small children talk on your mobile phone for long periods. They are more
susceptible than adults.
