Electromagnetic Waves

Dangers of Electromagnetic waves

Microwaves:

• Internal body heating
• Microwave ovens have shielding to prevent the waves reaching the user.

Infrared:

• Burns Skin
• Protect using insulating materials to reduce amount of IR reaching skin

Ultraviolet:

• Damages surface cells
• Blindness
• Suncrean with UV filters
• Stay out of strong sunlight

Gamma:

• Cell Mutation
• Tissue damage
• Cancer
• keep radioactive source of gamma in lead-lined boxes
• Montior exposure
• Very short exposure time

Uses of Electromagnetic Waves

Radio waves:

• Communications
• TV and FM radio broadcasting

Microwaves:

• Communication
• Satellite TV signals
• cooking

Infrared:

• Heating
• Grills
• Night-vision equipment

 Ultraviolet:

• Fluorescent lamps
• Tanning machines

X-rays:

• X-ray images

Gamma:

• Sterlising medical equipment
• Sterlising food