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Young's double slit experiment
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Young's double slit experiment

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  • 1. Physical optics (2) Submitted toDr. Mohammad Salah Prepared by: Ghayda’a Shaqour 2012-2013
  • 2.  The experiment is named for its inventor, Thomas Young (1773-1829) This experiment strongly demonstrates the wave nature of light.
  • 3.  Double slit  Screen  Light beam
  • 4. Particle Wave If light acts as a particle,  The light will diffract only two slits will appear and interfere, making on the screen many fringes
  • 5. L1 Next Maximad Central Maxima θ L2 Γ
  • 6.  Light hits two slits separated by 0.05 m. If 25.32 μm separates the bright fringes on the screen that is 2m distant, what is the wavelength of light being used?D sin =mλ m(1) 25.32 25.32 μm0.05 —= 2 1 λ 0.05 m 2m m(0)λ = 633nm
  • 7.  Light behaves like a wave; interference We used this property to calculate the wavelength of light Light also behaves like a particle This behavior is described in the dual wave/particle theory
  • 8.  http://skullsinthestars.com/2009/03/28/optics-basics- youngs-double-slit-experiment/ http://en.wikibooks.org/wiki/High_School_Chemistry /The_Dual_Nature_of_Light http://bylaketahoe.com/Laboratory%20Experiments.h tm#Experiment 1 http://www.walter-fendt.de/ph14e/doubleslit.htm

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