3.12, 3.13 Electromagnetic Spectrum - Uses & Disadvantages

(In order of decreasing wavelength AND increasing frequency)

Radio waves:
       broadcasting and communications
Microwaves:
       cooking and satellite transmissions
          // internal body tissue heat (from water inside)
Infrared: 
       heaters and night vision equipment (detects body heat)
          // skin and body tissue burn
Visible light:
       optical fibres and photography
Ultraviolet:
       fluorescent lamps
          // skin cancer and eye damage
X-rays:
       seeing inside materials and objects, medical (cancer cure)
Gamma rays:
       sterilising (food, and medical equipment)
          // Cancer and mutation


(3.11 - In order of decreasing wavelength AND increasing frequency)

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