Demonstrations

Microscopes

Code Number :	6A70.10
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 :	Good
Principle :	Lens Systems and Focal Lengths
Area of Study :	Optics
Equipment :	Optics Bench, Convex Lenses (20,30,48,76,18, cm), Eye chart Slide, Camera and Power Supply, Close-up Lenses.
Procedure :	The microscope is set up as indicated with the +20 lens at the end of the track near the camera and the +18 at the end near the eye chart slide. Use the camera in place of the human eye. The camera should be focused at infinity.

Web Links

Fun Science Gallery:
http://www.funsci.com/fun3_en/usph/usph.htm

Microscope - very simple. http://bizarrelabs.com
© 1997-2002 Brian Carusella, All rights reserved.

References

A.J. Cox and Alan J. DeWeerd, "The Image Between the Lenses: Activities with a Telescope and a Microscope," TPT, Vol. 41, # 3, p. 176, (March 2003).

Mark L. Biermann and Lois A. A. Biermann, "When the f / # is Not the f / #", TPT, Vol. 34, # 5, May 1996, p. 312.

Kenneth N. Taylor, "Measuring Focal Lengths and Principal Planes of Complex Lens", TPT, Vol. 25, # 8, Nov. 1987, p. 484.

Robert P. Lanni, "Optics Experiments by Armstrong", TPT, Vol. 5, # 2, Feb. 1967, p. 84.

H. L. Armstrong, "An Experiment on Optical Devices", TPT, Vol. 4, # 7, Oct. 1966, p. 323.

C. Harvey Palmer, "Experiment A16: The Refracting Telescope," Optics - Experiments and Demonstrations, John Hopkins Press, 1962

T. D. Rossing, C. J. Chiaverina, "4.10, Telescopes and Microscopes", Light Science, Physics and Visual Arts, p. 95.

Mail Questions and Comments to: Dale Stille