Demonstrations

Blackboard Optics - Straight Mirrors

Code Number :	6A10.10
Disclaimer:	Reprinted by permission of Dick Berg, University of Maryland, for use on this website. The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources. Further information regarding legal liability in use of demonstrations and labs will be found on the web site Injuries in School/College Laboratories in USA. The University of Iowa Disclaimers: University of Iowa Disclaimer All Rights Reserved..
Condition :	Excellent
Principle :	Reflection & Refraction of, Light Waves
Area of Study :	Optics
Equipment :	Blackboard Optics Kit 12 VDC power supply, Dry Erase Blackboard on wheels.
Procedure :	The blackboard optics unit is pretty self explanatory, however there is a pamphlet on its use with the unit and in the file. Do Not run the power supply for the light bulb over 12 volts. We can also do a demo on the blackboard optics unit where we explain the situation of incident angle of light rays on a mirror. Draw a straight line near the bottom of the board to represent the mirror. Then use the ellipse maker apparatus to draw your arcs and show the angles. Dry erase markers are in the drawer on the B.B Optics Unit.

References

"Figuring Physics", TPT, Vol. 43, # 3, Mar. 2005, p. 180.

C. Criado and N. Alamo, "Optical Properties of the Conics Derived from an Elementary Kinematic Consideration", TPT, Vol. 42, # 5, May 2004, p. 272.

Jorge Sztrajman and Agustin Rela, "Optical Property of the Ellipse Derived from Energy Conservation," TPT, Vol. 41, # 4, p. 208, (April 2003).

Theodore H. Ansbacher, "Left-Right Semantics?", TPT, Vol. 30, # 2, Feb. 1992, p. 70.

Igal Galili, Sharon Bendall and Fred Goldberg, "Author's Response", TPT, Vol. 30, # 2, Feb. 1992, p. 70.

"Martin Gardner, "A Mirror Paradox", TPT, Vol. 30, # 1, Jan. 1992, p. 27.

Igal Galili, Fred Golberg, and Sharon Bendall, "Some Reflections on Plane Mirrors and Images", TPT, Vol. 29, # 7, July 1991, p. 471.

Lila M. Adair, "A Reflection on the Game of Tag", TPT, Vol. 27, # 5, May 1989, p. 362.

Jay S. Huebner, "Multiple Reflections from Common Mirrors", TPT, Vol. 25, # 4, Apr. 1987, p. 233.

"Erratum", TPT, Vol. 25, # 3, Mar. 1987, p. 139.

Danel Kaplan, "Plane Mirror Praise", TPT, Vol. 25, # 4, Apr. 1987, p. 199.

D. Easton, "On Reflections in Ponds", TPT, Vol. 25, # 3, Mar. 1987, p. 150.

"Figuring Physics", TPT, Vol. 25, # 9, Dec. 1987, p. 582.

Edwin R. Jones and R. D. Edge, "Optics of the Rear-View Mirror: A Laboratory Experiment", TPT, Vol. 24, # 4, Apr. 1986, p. 221.

"View It", TPT, Vol. 24, # 7, Oct. 1986, p. 426.

Fred M. Goldberg and Lillian C. McDermontt, "Student Difficulties in Understanding Image Formation by a Plane Mirror", TPT, Vol. 24, # 7, Oct. 1986, p. 472.

Jim Nelson, "Reflection on the Study of Flat Mirrors: Two demonstrations", TPT, Vol. 22, # 6, Sept. 1984, p. 388 - 389.

Thomas B. Greenslade, Jr., "The Half-Length Mirror", TPT, Vol. 16, # 6, Sept. 1978, p. 381.

Y. P. Hwu, "Experiments with Fermat's Principle", TPT, Vol. 16, # 7, Oct. 1978, p. 481.

"Christmas is a Time for Mysteries", TPT, Vol. 10, # 9, Dec. 1972, p. 516.

Marvin Ohriner, "Experimental Demonstration of Fermat's Principle", TPT, Vol. 3, # 5, May 1965, p. 230.

G.B. Frieedmann and H. S. Sandrhu, "Phase Changes on Reflection from a Metallic Surface", AJP, Vol. 56, # 3, March 1988, p. 270.

J. H. Shaw, "Fermat's Principle and Geometrical Optics", AJP, Vol. 33, # 1, Jan. 1965, p. 40.

A. J. de Witte, "Interference in Scattered Light", AJP, Vol. 35, # 4, Apr. 1967, p.301.

Ob-8,11: Freier and Anderson, A Demonstration Handbook for Physics, File.

Barbara Goss Levi, "New Angles to Refraction and Reflection in Chiral Liquids", Physics Today, December, 2006, p. 22.

C. Harvey Palmer, "Experiment A4: Demonstration of the Redirective Properties of Prisms and Plane Mirror Devices," Optics - Experiments and Demonstrations, John Hopkins Press, 1962.

T. D. Rossing, C. J. Chiaverina, "3.1, Images Formed by Plane and Curved Mirrors", Light Science, Physics and Visual Arts, p. 51.

"Reflection and Refraction", Selective Experiments in Physics, CENCO, 1940.

Mail Questions and Comments to: Dale Stille