Fresnel Biprism, Laser, Spatial Filter
Fresnel Biprism, Laser, Spatial Filter
Fresnel Biprism Image

 

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.
  • V. R. Potnis, An-Ti Chai, "A Proposal for Naming the Units of Linear and Angular Momentum", AJP, Vol. 40, #5, May 1972, p. 767.
  • A. R. Venkataraman, "The Refractive Index of a Biprism", AJP, Vol. 39, #9, Sept. 1971, p. 1093.
  • "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.