precaution to reduce mobile radiation in human beings
DESCRIPTION
precaution to reduce mobile radiation in human beings protective measures regarding cellular radiationTRANSCRIPT
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School of Engineering and Technology
Presentation on:Precaution to reduce mobile radiation in human
beings
Made By:-
Abhiraj Bohra
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Cell Phone - Background
• Use of cell phones has grown dramatically over the last fifteen years.
• Operate at frequencies slightly higher than TV and FM Radio signals .
• Analog and digital phones operate in the frequency range of 900 - 1800 MHz.
• The maximum powers of these phones are 2W and 1W (900 and 1800 MHz respectively). Average power are 1/8 of maximum.
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EM Spectrum
Humans are Exposed to Broad Range of Electromagnetic Frequencies
Frequency
Nonionizing Radiation Ionizing Radiation
1Hz
10Hz
100Hz
1kHz
10kHz
100kHz
1MHz
10MHz
100MHz
1012
Hz1013
Hz1014
Hz1015
Hz1016
Hz1017
Hz1018
Hz1019
Hz1020
Hz1021
Hz1022
Hz1
GHz10
GHz100GHz
Extra-low frequency (ELF)
Radio Microwave Infrared
Visible light
Ultra-violet X-rays, gamma rays
Electric power
FM radio, VHF TV
UHF TV, cellular
telephones
Microwave ovens, police
radar, satellite stations
Heat lamps
Sun lamps
Video display
terminals
AM radio
}
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Purchase a cell phone that rates as low as possible on the scale of radiation emissions:
Low SAR(Specific Adsorption Rate) value
SAR value is used to indicate how much radiation is absorbed by human body when the handset is used at maximum power
Ideal SAR value – 0.2 – 0.8 W/Kg
Precautions to minimize exposure to radiation when using a mobile phone
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Limit the length of your calls on your cell phone:
Increases exposure to radiating signals
Alter brain electrical activity
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Use a hands-free device or wireless headset to increase the distance between the phone and
your head:
Use speakerphone mode Use a wired headset Use a wireless Bluetooth headset or earpiece, Carry your cell phone away from your body
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Turn the cell phone off when not in use:
Emits radiation in standby mode
Keep cell phone in bag
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Stay still when using a cell phone:
More radiation emitted when keep moving
Do not use the phone while you are in a moving vehicle, including the train, bus, etc, since its antenna will be constantly scanning for contact using the maximum signal strength
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Consider either not giving cell phone to children or limiting their usages to
emergency circumstances :
More susceptible to radiations
Not used below age 15
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Try Texting, Not Talking:
Sending texts emits less radiationLess exposure to radiation
Return to the cord phone or land line phone:
emit no radiationCan be used for unlimited duration
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Make use of protective items to shield yourself from radiation:
metal phone carrying case,
protective anti-radiation fabric
anti-radiation paint, etc
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For weak signals cell phone has to work harder for transmit and receive
Equals higher bust of radiation
Use the phone only in strong signals
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