ERIC Number: EJ1083330
Record Type: Journal
Publication Date: 2006-Dec
Abstractor: As Provided
Reference Count: 7
A Simple Laser Microphone for Classroom Demonstration
Moses, James M.; Trout, K. P.
Physics Teacher, v44 n9 p600-603 Dec 2006
Communication through the modulation of electromagnetic radiation has become a foundational technique in modern technology. In this paper we discuss a modern day method of eavesdropping based upon the modulation of laser light reflected from a window pane. A simple and affordable classroom demonstration of a "laser microphone" is described.
Descriptors: Demonstrations (Educational), Lasers, Audio Equipment, Electromechanical Technology, Radiation, Science Activities, Scientific Concepts, Scientific Principles, Scientific Methodology, Educational Practices, Classroom Techniques
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: email@example.com; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Authoring Institution: N/A