3.13 Consequences to humans

Microwaves: Internal Heating of body tissue
Infra-red: Skin burns
Ultraviolet: damage to surface of cells and blindness
Gamma rays: cancer, mutation

3.12 Uses of the electromagnetic spectrum

Radio: Communication and Broadcasting
Microwaves: Cooking and satellite transmissions
Infrared: Heaters and night vision
Visible Light: Optical fibers and photography
Ultraviolet: fluorescent lamps
X-rays : observing the internal structure of objects