Demonstrations

Mirrors - Mirrors at an Angle

Code Number :	6A10.40
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 :	Reflections
Area of Study :	Optics
Equipment :	Mirror Demo, Poster with large writing, Adjustable Angle Mirror.
Procedure :	Clean the mirrors thoroughly before use. When moving the demo use care over bumps so a not to break the flat mirror. Hold a poster with writing on it before the mirrors and the words will be backward and unreadable in the flat mirror but readable in the mirrors set at 90 degrees. Varying the separation of the mirrors and providing a slight offset should give you a position showing a maximum amount of reflections.

References

MAlan J. DeWeerd and S. Eric Hill, "Reflections on Handedness", TPT, Vol. 42, # 5, May 2004, p. 275.

Howard E. Evans II, "Ray Tracing with Hinged Mirrors", TPT, Vol. 34, # 5, May 1996, p. 314.

Paul Chagnon, "Animated Displays II: Multiple Reflections," TPT, Vol. 30, # 8, p. 488, (November 1992).

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.

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

ichael J. Ruiz and Terry L. Robinson, "Illusions with Plane Mirrors," TPT, Vol. 25, # 4, p. 206, (April 1987).

T. H. Ansbacher, "The Non-Reversing Mirror with a Twist," TPT, Vol. 25, # 2, p. 104, (February 1987).

R.D. Edge and Edwin R, Jones, Jr., "Optical Illusions", TPT, Vol. 22, # 9 , Dec. 1984, p. 591.

Ronald D. Edge, "In A Mirror, Darkly", TPT, Vol. 20, # 8, Nov. 1982, p. 504.

Thomas B. Greenslade, Jr., "The Author Responds," TPT, Vol. 20, # 8, Nov. 1982, p. 505.

Mario Iona, "Virtual Mirrors", TPT, Vol. 20, # 5, May 1982, p. 278.

Thomas B. Greenslade, Jr., "Multiple Images in Plane Mirrors", TPT, Vol. 20, # 1, Jan. 1982, p. 29 - 33.

R. Kennedy Carpenter, "Drake's Law", TPT, Vol. 12, # 3, March 1974, p. 133.

Bill Franklin, "How Many Images?", TPT, Vol. 12, # 6, Sept. 1974, p. 325.

R. Kennedy Carpenter, "The Author Replies", TPT, Vol. 12, # 6, Sept. 1974, p. 380.

Lillian C. McDermott, "Double Mirror Experiments: An Extension of the Physics Curriculum", TPT, Vo. 12, # 6, Sept. 1974, p. 354.

R. Kennedy Carpenter, "A Favorite Experiment", TPT, Vol. 11, # 7, Oct. 1973, p. 428.

Hector Covarrubias M. "Successive Reflections of a Light Beam on a Pair of Plane Mirrors." AJP, 567, Vol. 58, No. 6, (June 1990).

Ob - 4, 6: Freier and Anderson, A Demonstration Handbook for Physics.

O-120: "Barber Shop & Fixed Angle," DICK and RAE Physics Demo Notebook.

O-125: "Variable Angle Mirrors," DICK and RAE Physics Demo Notebook.

5.27: Jearl Walker, "Bike Reflectors," The Flying Circus of Physics with Answers.

"7.1.3: Multiple Images," Cunningham and Herr, Hands-On Physics Activities with Real Life Applications, p. 439.

"42, Corner Mirrors," Christopher P. Jargodzki and Franklin Potter, Mad About Physics, p. 15, 166.

Ron Hipschman, "Corner Reflector," Exploratorium Cookbook III, p. 170.1 - 170.3.

Robert Ehrlich, "Multiple Images Between Two Inclined Mirrors," Turning the World Inside Out, p. 178-179.

Mail Questions and Comments to: Dale Stille