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ERIC Number: EJ931313
Record Type: Journal
Publication Date: 2011-Mar
Pages: 11
Abstractor: As Provided
Reference Count: 22
ISSN: ISSN-0143-0807
Verification of the Uncertainty Principle by Using Diffraction of Light Waves
Nikolic, D.; Nesic, Lj
European Journal of Physics, v32 n2 p467-477 Mar 2011
We described a simple idea for experimental verification of the uncertainty principle for light waves. We used a single-slit diffraction of a laser beam for measuring the angular width of zero-order diffraction maximum and obtained the corresponding wave number uncertainty. We will assume that the uncertainty in position is the slit width. For the acquisition of the experimental data and their further analysis, we used a computer. Because of its simplicity this experiment is very suitable for demonstration, as well as for a quantitative exercise at universities and final year of high school studies. (Contains 10 footnotes, 1 table, and 8 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: High Schools; Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A