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Diffraction & Double Slit Experiment
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Diffraction & Double Slit Experiment

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Transcript

  • 1. DiffractionThe bending ofwaves around theedges of barriers
  • 2. Diffraction(a) the diffraction effects are greater for long wavelength waves(b) the diffraction effects are greater for small holes
  • 3. Youngs Double Slit Experiment
  • 4. Double SlitExperiment
  • 5. Double SlitExperiment
  • 6. Double SlitExperiment
  • 7. Double Slit ExperimentConstructive Interference (Bright, maxima): d sin θ = mλDestructive Interference (Dark, minima): d sin θ = (m + ½)λ
  • 8. Sample Problem #1 Monochromatic light falling on twoslits 0.016 mm apart from each other produces a 5th order fringe at an angle of 8.8 degrees. What is the wavelength of the light used?
  • 9. Sample Problem #2A screen containing two slits 0.100 mm apart is 1.2 m from the screen. Light with a wavelength of 500 nm falls on the slits from a distant source. Approximately how far apart are theadjacent bright interference fringes on the screen?
  • 10. Sample Problem #2
  • 11. Intensity
  • 12. Dispersion
  • 13. Polarization
  • 14. Critical Angle
  • 15. MirrorsMirrors- f is + for concave, - for convex- do and di are + for real objects & images- do and di are - for virtual objects & images- m is + for upright images, - for inverted images
  • 16. LensesLenses- f is + for converging, - for diverging- do and di are + for real objects & images- do and di are - for virtual objects & images- m is + for upright images, - for inverted images