Electromagnetic Waves and Uses

Electromagnetic Waves and Uses

1. Radio waves

   • 10cm - 10km
   • Used for communications
   • Can diffract around hills and buildings

2. Microwaves

   • 1cm
   • Used for mobile phones

3. Infrared

   • 10^-5m
     • 0.01mm
   • Used in optical fibres

4. Visible Light

   • 10^-7m
   • Used for photography

5. Ultraviolet

   • 10^-8m
   • Used in tanning salons
   • Causes ionisation

6. X-Rays

   • 10^-10m
   • Used to look inside objects

7. Gamma Rays

   • 10^-15m
   • Used to treat cancer