6D10.41 - Fresnel Biprism

See paragraph one in the procedure section.
Code Number:
6D10.41
Demo Title:
Fresnel Biprism
Condition:
Excellent
Principle:
Diffraction of Waves
Area of Study:
Optics
Equipment:
Fresnel Biprism, Laser, Spatial Filter.
Procedure:

Place the Fresnel biprism in front of the laser / spatial filter unit.  A very nice interference pattern will appear on the screen.  Its size can be adjusted by moving the biprism closer or farther away from the spatial filter.

References:
  • Thomas B. Greenslade Jr. , "Interference Fringes Using a Fresnel Biprism and a Laser", TPT, Vol. 43, May 2005, p. 310. 
  • J. J.  Veit, D. J. Solarlek, "Interference Fringes Using a Fresnel Biprism and a Laser", TPT, # 7, Oct. 1975, p. 413.
  • "Interference Young's Experiment", DICK and RAE Physics Demo Notebook, 1993.
  • T. Kallard, "Interference with Fresnel's Biprism", Exploring Laser Light, p. 113.
  • Wallace A. Hilton, "I-3, Fresnel Biprism", Experiments in Optical Physics, p. 21.

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