Demonstrations

Time Dilation - Twin Paradox

Code Number :	7F10.31
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 :	Time Contraction
Area of Study :	Modern Physics
Equipment :	VHS tape - Mechanical Universe II # 17,
Procedure :	A twin paradox example is available on the Mechanical Universe tape.

References

Lisa N. Daly and George K. Horton, "The Universality of Time Dilation and Space Contraction", TPT, Vol. 32, # 5, May 1994, p. 306.

Barry R. Holstein, "Gravitational Twins Revisited", TPT, Vol. 23, # 6, Sept. 1985, p. 364.

Michael Bradley, Jack Higbie, "Gravitation Twins", TPT, Vol. 22, # 1, Jan. 1984, p. 34.

A. C. Melissinos, "A Triplet Paradox", TPT, Vol. 20, # 1, Jan. 1982, p. 53.

John Walters, "Time Dilation and The Lorentz Contraction", TPT, Vol. 20, # 1, Jan. 1982, p. 42 - 44.

Donald E. Hall, "Intuition, Time , Dilation, and the Twin Paradox", TPT, Vol. 16, # 4, Apr. 1978, p. 209.

Barry Leonard Werner, "The Twin Paradox Revisited", TPT, Vol. 13, # 7, Oct. 1975, p. 42.

G. McGuire, "Twins and Time", TPT, Vol. 12, # 6, Sept. 1974, p. 388.

Henry M. Bradford, "Twins and Time", TPT, Vol. 12, # 6, Sept. 1974, p. 389.

Peter A. Fowell, "Twins and Time", TPT, Vol. 12, # 6, Sept. 1974, p. 389.

Paul G. Hewitt, "The Author Replies", TPT, Vol. 12, # 9, Dec. 1974, p. 389.

Paul G. Hewitt, "On Teaching About Twins and Time", TPT, Vol. 11, # 9, Dec. 1973, p. 519.

Antony Eagle, "A Note on Dolby and Gull on Radar Time and the Twin 'Paradox'", AJP, Vol. 73, # 10, Oct. 2005, p. 976.

E. Minguzzi, "Differential Aging From Acceleration: An Explicit Formula", AJP, Vol. 73, # 9, Sept. 2005, p. 876.

Carl E. Dolby, Stephen F. Gull, "On Radar Time and the Twin "Paradox" ", AJP, Vol. 69, # 12, p. 1257, Dec. 2001.

Maria B. Cranor, Elizabeth M. Heider, Richard H. Price, "A Circular Twin Paradox", AJP, Vol. 68, # 11, p. 1016, Nov. 2000.

Barry R. Holstein, Arthur R. Swift, "The Relativity Twins in Free Fall", AJP, Vol. 40, # 5, May 1972, p. 746.

Daniel M, Greenberg, "The Reality of Twin Paradox Effect", AJP, Vol. 40, # 5, May 1972, p. 750.

Richard A. Muller, "The Twin Paradox in Special Relativity", AJP, Vol. 40, #7, July 1972, p. 966.

Leo Levi, "The "Twin Paradox" Revisited", AJP, Vol. 35, # 10, Oct. 1967, p. 968.

"Puzzles and Paradoxes", Selected Reprints Published for The American Association of Physics Teachers by the American Institute of Physics.

Mail Questions and Comments to: Dale Stille