3.13 Effects of excessive exposure of the human body to electromagnetic waves

• Microwaves- Internal heating of body tissue.
• Infrared- Skin burns.
• Ultraviolet- Damage to surface cells and blindness.
• Gamma rays- Cancer, mutation.

3.12 Electromagnetic Uses

• Radio waves- Broadcasting and communications.
• Microwaves- Cooking and satellite transmission.
• Infrared- Heaters and nigh vision equipment.
• Visible light- Optical fibres and photography.
• Ultraviolet- Fluorescent lamps.
• X-rays- Observing the internal structure of objects and materials and medicals applications.
• Gamma rays- Sterilising food and medical equipment.