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LIGHT - PowerPoint PPT Presentation


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LIGHT. Electromagnetic Waves. Vacuum Force fields. Photons. Definition Electrons Energy levels Electrons absorb energy. Photons (cont.). “Excited & unstable” Photons released when electrons return Photon energy 1. Energy level jump 2. Types of

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Presentation Transcript
slide2

Electromagnetic Waves

  • Vacuum
  • Force fields

Photons

  • Definition
  • Electrons
  • Energy levels
  • Electrons
  • absorb energy
slide3

Photons (cont.)

  • “Excited & unstable”
  • Photons released when
  • electrons return
  • Photon energy
  • 1. Energy level
  • jump
  • 2. Types of
  • light
slide4

Properties of Light

  • Transverse wave/photons
  • Wavelength
  • Frequency/energy
  • Speed of light
  • 1. c = 300 million m/s
  • 2. Medium
  • 3. Types of light
  • 4. Calculation of
  • speed of light???

vacuum

gases

liquids

solids