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2. Infrared radiation

  • in security systems such as burglar alarms
  • in fluorescent lamps
  • in airport sercurity
  • to broadcast radio and TV programmes

3. X-rays

  • to disinfect water
  • to look inside objects
  • to sterilise food
  • in cooking

4. Gamma rays

  • in remote controls for TVs
  • to make thermal images
  • to detect cancer
  • to communicate with ships

5. Radio waves are used to

  • to look inside objects
  • short-range communications
  • communicate with ships, aeroplanes and satelites
  • to detect security marks using special pens

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