BELL RINGERS Mrs. Bryant. SECOND NINE WEEKS Literature Bell Ringers.
RADIOACTIVE RINGERS BRITTANY WILLIAMS 4B 9/26/14.
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Transcript of RADIOACTIVE RINGERS BRITTANY WILLIAMS 4B 9/26/14.
RADIOACTI
VE RIN
GERS
BR
I TT A
NY
WI L
L I AM
S 4
B 9
/ 26
/ 14
PROJECT PURPOSE
The purpose is to investigate if a cellphone emits microwave radiation, and to determine the level
of radiation from varying types of phones.
HYPOTHESIS
If I test the radiation level from a larger, bulkier phone, then the level will be higher than a
smaller, lighter phone.
MATERIALS
1. Various cell phone models
2. A metric ruler
3. A Microwave leakage detector
PROCEDURE
Step One: Select a cell phone model.
Step Two: Make a phone call
Step Three: Position the microwave leakage detector 5mm from the microphone and log the measurement
Step Four: Position the microwave leakage detector 5mm from the speaker and log the measurement
Step Five: Position the microwave leakage detector 5mm from the right side and log the measurement
Step Six: Position the microwave leakage detector 5mm from the left side and log the measurement
Step Seven: Repeat steps 1-6 three times per cellphone
PICTURE OF PROCESS
VARIABLES
Controlled variables
The controlled variables are the distance from the phone to the radiation detector and the amount of time that the phone is
tested.
Independent variable
The independent variable is the type of phone.
Dependent variable
The dependent variable is the amount of radiation.
IPHONE 5 DATA
SAMSUNG STRATOSPHERE DATA
MOTOROLA BARRAGE DATA
GROUPED DATA
ANALYSISA radiation meter and 4 different cellphones were
used in my experiment. The average radiation given off by the IPhone 5's microphone was
0.377 curies. Its earpiece gave off 0.317 curies, the left side of the phone gave off 0.52 curies, and the right side gave off 0.183 curies. The average radiation given off by the Samsung
Stratosphere's microphone was 5.283 curies. Its earpiece gave off 4.81 curies the left side of the phone gave off 4.827 curies, and the right side
gave off 5.34 curies. The average radiation given off by Verizon's Motorola barrage
microphone was 7.84 curies. Its earpiece gave off 2.553 curies, the left side of the phone gave off 5.087 curies, and the right side gave off 5.48
curies.
SEMI-CONCLUSION
My hypothesis was supported. The bulkier phone, the Motorola Barrage, emitted the most
radiation.
HEALTH ASPECT
Radiofrequency energy is a form of electromagnetic radiation. Electromagnetic radiation can be
categorized into two types: ionizing and non-ionizing.
Exposure to ionizing radiation is known to increase the risk of cancer. However, although many studies have examined the potential health effects of non-
ionizing radiation from radar, microwave ovens, and other sources, there is currently no consistent evidence that non-ionizing radiation increases
cancer risk.
HEALTH ASPECT
The only known biological effect of radiofrequency energy is heating. The ability of microwave ovens to heat food is one example of this effect of radiofrequency energy.
Radiofrequency exposure from cell phone use does cause heating; however, it is not sufficient to
measurably increase body temperature.
A recent study showed that when people used a cell phone for 50 minutes, brain tissues on the same side of
the head as the phone’s antenna metabolized more glucose than did tissues on the opposite side of the
brain. The researchers noted that the results are preliminary, and possible health outcomes from this increase in glucose metabolism are still unknown.
FINAL CONCLUSION
Because the bigger, bulkier phones emit more radiation, they are more harmful to human
brain cells.