Flourescence

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  • Created by: nerdkoala
  • Created on: 05-01-15 10:01
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  • Fluorescence
    • First excitation
      • Electron flow from anode to cathode
      • Usually mercury gas in between
      • Electrons hit atoms and transfer energy
      • Atoms excite and then relax
      • Relaxation produces primarily ultraviolet photons
    • Second excitation
      • Phosphorous (or similar) coating on tube
      • The incident ultraviolet photons cause excitation
      • Relaxation produces photons in the visible light spectrum
      • Visible light emission
    • Calculations
      • Energy = Planck's constant x frequency of photon
      • Speed = frequency x wavelength

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