Demonstrations

Thin Lenses - Image Formation - Arrow Projector

Code Number :	6A60.31
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 :	Fair
Principle :	Lenses and Image Formation
Area of Study :	Optics
Equipment :	Optical bench Lenses (convex & concave) (assorted), Screen (white cardboard), Light source with image, Meter stick, Parallel Ray Light Source (Slide Projector).
Procedure :	Arrange the apparatus as shown. With the lenses you can project the inverted light image onto the screen which may be seen with the camera focused on the screen. You may also remove the screen and project the image directly into the camera thus simulating the human eye. The meter stick is for measuring focal lengths. To measure the focal lengths accurately you will need a distant parallel light source. Bring the light rays to a point with a lens on the paper screen. The distance from the paper screen to the lens is the focal length.

References

O-315: "Right-Left Inversion," DICK and RAE Physics Demo Notebook.

Janice VanCleave, "Inverted," 200 Gooey, Slippery, Slimy, Weird, & Fun Experiments, p. 16.

Created by Robert Johnson, Jeremy Eble, Chad Johnson, and Adam Johanns.