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Code Number: 6H30.80
Demo Title: Faraday Rotation
Condition: Excellent
Principle: Optical Rotation in a Magnetic Field
Area of Study: Optics
Equipment:
Faraday Rotation App., Lasers, Laser Stand, Styrofoam cups, 60 cc syringe with short blunt needle, screens with stands.
Procedure:
Our procedure is to shine the desired laser through the sample without the magnetic field being applied, set the analyzer to zero degrees, and rotate the polarizer until minimum light transmission or extinction is achieved on the screen. The magnetic field is then applied by moving the ring magnets over the sample at which point a bright spot of light will appear on the screen. Rotating the analyzer until that bright spot is again at a minimum or extinguished will give you the rotation angle for that wavelength.
References:
- Giuseppe Colicchia, "A Simple Device for Exploring Optical Activity", TPT, Vol. 42, Nov. 2004, p. 748.
- Jain, Kumar, Zhou, Li, Tripathy, "A Simple Experiment for Determining Verdet Constants Using Alternating Current Magnetic Fields", AJP, Vol. 67, # 8, Aug. 1999, p. 714.
- Eliot M. Briggs and Richard W. Peterson, "Liquid Cell Faraday Modulator", AJP, Vol. 61, #2, Feb. 1993, p. 186.
- Frank L. Pedrotti, Peter Bandettini, "Faraday Rotation in the Undergraduate Advanced Laboratory", AJP, Vol. 58, # 6, June 1990, p. 542.
- Frank J. Loeffler, "A Faraday Rotation Experiment for the Undergraduate Physics Laboratory", AJP, Vol. 51, #7, July 1983, p. 661.
- Kam L. Yan, W. P. Lonc, S. J., "MIcrowave Faraday Rotation", AJP, Vol. 43, #8, Aug. 1975, p. 718.
- Wallace A. Hilton, "P-5", Experiments in Optical Physics, p. 73.
- Michael E. Flatte, Dale Stille, "Faraday Rotation as a Lecture Demonstration".
- The Relaxation Times, "'Kaizen' on Faraday Rotation", Newsletter of Teachspin Inc., Oct. 2018.