GCSE Combined Science (AQA)

622 videos | 38 hours

Applications of Visible & UV Light

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Waves Electromagnetic waves

Applications of Visible & UV Light

3:53 Applications of Electromagnetic Waves
Spec 4.6.2.4
Previous Visible Light Next Applications of Gamma & X-Rays
  • Electromagnetic spectrum waves are used for various applications.
  • Visible light is commonly used for illumination.
  • Light sources include the sun, flames, and light bulbs.
  • Light bulbs use a filament that emits electromagnetic waves when heated.
  • Energy-efficient bulbs convert ultraviolet (UV) waves into visible light.
  • UV waves in bulbs are absorbed by chemicals, releasing visible light.
  • Glow sticks and special lamps use similar principles to produce light.
  • Tanning beds use lamps that emit UV waves to tan skin.
  • Optical fibers transmit signals quickly over long distances using electromagnetic waves.
  • Optical fibers can establish internet connections and make phone calls.
  • Signals travel through thin glass tubes, bouncing off walls to navigate.
  • Visible light or infrared can be used in optical fiber networks.
  • Lasers using visible light can cut tissue and materials.
  • Lasers are concentrated beams of visible light, used in industry and surgery.
  • Exam questions may ask for examples of wave applications or which wave to use.

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