Electromagnetic spectrum

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Uses of EM waves

  • Radio- radio and TV

  • Microwaves- satellite communication, cooking food

  • Infrared- electric heaters, cooking food, infrared cameras

  • Visible- fibre optic communication

  • Ultra violet- energy efficient lamps, sun tanning

  • X-rays- imaging bones

  • Gamma rays- radiotherapy, medical imaging

2
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<p>What are these properties of EM waves on materials?</p>

What are these properties of EM waves on materials?

  1. Transmit

  2. Specular reflection

  3. Diffuse reflection

  4. Absorb

  5. Refract

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<p>Label the wavelengths </p>

Label the wavelengths

  1. Radio- produced by oscillations in circuits

  2. Microwaves

  3. Infrared- thermal energy

  4. Visible

  5. Ultra violet- skin damage

  6. X rays- cause cancer

  7. Gamma rays- cause cancer

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Concave and convex

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