The electro-magnetic spectrum

The electro-magnetic spectrum

1. X-rays

   • Properties:
     • Affect photographic film in the same way as light
     • Absorbed by metal and bone
     • Transmitted by soft tissue
   • Have a small wavelength, high energy and cause ionisation

2. The uses:

   • Microwaves - mobile phones and satellite communications
   • Gamma rays - killing bacteria
   • Ultraviolet - medical imaging

3. The order:

4. Possible risks:

   • X - rays - high doses can kill cells
   • Gamma rays - genetic mutations
   • Ultraviolet - skin cancer and blindness
   • Microwaves - Heating of bodily tissue

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