PH-1628
Hazards of electromagnetic waves
Physics · Secondary 4 · Medium · Hazards of electromagnetic waves
A mobile phone company wants to place a powerful microwave transmitter on top of a school building. Which possible effect on people nearby is the main health concern from the microwaves?
- Excessive heating of body tissues near the transmitter
- Turning nearby people into radioactive sources
- Instantly ionising the bones of people in classrooms
- Weakening the structure of the building’s concrete
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