Frustrated Total Internal Reflection - Steal the Signal




Image #2

Image #3

Image #4

 

content.gif (1503 bytes)
 Code Number :  

6A44.42

See also: 7A50.10 

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 :   Barrier penetration, critical angle, and cladding properties.
Area of Study :  Optics  
Equipment :   Laser, Light pipes, glycerin, watch glass.
Procedure :   Two sets of fiber optics light pipes from the fiber optics demonstrator kit may be used to show some interesting effects.  Press them together with a          C-clamp where the light beam bounces off the edge in one and the beam will be directed into the other pipe.  Or you can wet the end of one of the light pipes with glycerin and press to the other light pipe at the position where the laser beam strikes the edge.  The laser beam should be directed outside the first light pipe and into the second.
conbot.gif (53 bytes)


   References

Dale Edgar, "Simulating Optical Fibers", TPT, Vol.26, # 8, Nov. 1988, p. 504.

 

A. A. Stahlhofen, "Comment on 'Frustrated Total Internal Reflection: A Simple Application and Demonstration, AJP, Vol. 71, # 5, May 2003, p. 494", AJP, Vol. 72, # 3, March 2004, p. 412.

F. P. Zanella, D. V. Magalhaes, M. M. Oliveira, R. F. Bianchi, L. Misoguti, and C. R. Mendonca, "Frustrated Total Internal Reflection: A Simple Application and Demonstration", AJP, Vol. 71, # 5, May 2003, p. 494.

I. Godeny, F. J. Kedves, and D. Beke, "Total Reflection of Light and Water Waves", AJP, Vol. 45, # 6, June 1977, p. 550.

 

0-258: "Light Vanish in Oil/Vaseline", DICK and RAE Physics Demo Notebook.