https://physlab-wiki.com/ 2026-04-19T04:06:30+00:00 https://physlab-wiki.com/ https://physlab-wiki.com/lib/tpl/UChicago/images/favicon.ico text/html 2023-04-19T12:16:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/anti-reflection_with_quarter_wave_plate?rev=1681920995&do=diff Anti-reflection with Quarter Wave Plate A laser beam is directed at a polarizing filter followed by a quarter wave plate and a mirror. The mirror reflects the beam back though the wave plate and polarizer and onto a projection screen. If the quarter wave plate is properly oriented the beam viewed at the projection screen will be severely attenuated. text/html 2021-11-05T16:52:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/calcite_birefringence?rev=1636145521&do=diff Calcite Birefringence A calcite crystal is placed on top of a transparency on an overhead projector. Print on the transparency will be doubly imaged. With a polarizing filter, one can show that the two images have orthogonal polarizations. One may rotate the crystal to distinguish between the ordinary and extraordinary rays. text/html 2021-11-05T16:52:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/corn_syrup_polarization_rotation?rev=1636145551&do=diff Corn Syrup Polarization Rotation A transparent container of corn syrup is illuminated with polarized light using an overhead projector and a piece of polaroid film. A mask is placed around the base of the cylinder to eliminate unwanted light. When the cylinder is viewed from the side through a second piece of polaroid, a spiral band of color interference correlated with the polarization of light in the corn syrup is visible. text/html 2021-11-05T16:53:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/faraday_rotation?rev=1636145585&do=diff Faraday Rotation Polarized light from a laser is passed through a glass rod inside a long coil. When a current is applied to the coil, the polarization of the light is rotated slightly. A rotatable polarization filter allows the polarization of the outgoing beam to be analyzed. The effect may be viewed by projecting the beam onto a wall or screen. Alternatively, a photodiode is available for measurement of the transmitted beam intensity. text/html 2021-11-05T16:53:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/polarization_by_reflection?rev=1636145617&do=diff Polarization by Reflection A slide projector is used to shine light downward onto a glass plate at Brewster's angle, approximately 34 degrees from the horizontal. Using a polarization filter, the reflected light can be shown to be almost completely polarized in the horizontal direction. text/html 2021-11-05T16:54:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/polaroid_filters?rev=1636145647&do=diff Polaroid Filters A light source is set up along with three mounted, adjustable polaroid filters. Single polaroid sheets are also available. L1, G0 PIRA DCS 6H10.10 text/html 2021-11-05T16:55:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/stress-induced_birefringence?rev=1636145744&do=diff Stress-Induced Birefringence A light source is set up along with three mounted, adjustable Polaroid filters. Single Polaroid sheets are also available. L1, G0, A0 PIRA DCS 6H10.10 text/html 2021-11-05T16:56:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://physlab-wiki.com/physicsdemos/waves_and_optics/polarization/wave_plates?rev=1636145783&do=diff Wave Plates A slide projector is used to shine illuminate wave plates in between a pair of adjustable polarizing filters. Quarter and half wave plates are available. L1, G0 PIRA DCS 6H35.40, 6H35.45