GCSE Physics (AQA)

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Applications of Low-Frequency EM Waves

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Waves Electromagnetic waves

Applications of Low-Frequency EM Waves

4:07 Applications of Electromagnetic Waves
Spec 4.6.2.4
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  • Electromagnetic waves have various practical applications based on their frequencies.
  • Radio waves are used for sending radio and television signals over long distances.
  • Radio waves carry signals through variations in frequency, amplitude, and duration.
  • Receiving devices translate radio wave signals into information for display.
  • Microwaves are used to send signals to and from satellites.
  • Satellite signals are used for modern televisions, phones, sat navs, and weather tracking.
  • Infrared waves are used for short-range signals, such as in remote controls and some children's toys.
  • Infrared waves are commonly used in TV remotes to send signals to the TV.
  • Some devices like game controllers and wireless speakers use radio waves for short-range signaling.
  • Microwaves and infrared waves are used in cooking and heating.
  • Microwaves are used in microwave ovens to cook food by absorbing microwaves and gaining thermal energy.
  • Infrared waves are used in electric ovens and heaters for cooking and warming rooms.
  • Special cameras use infrared waves to take images in the dark, detecting infrared radiation emitted by warm objects.
  • Thermal imaging is used in wildlife tracking, military, and medical equipment.
  • Understanding the applications of different electromagnetic waves is important for exams.

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