ERIC Number: EJ1168678
Record Type: Journal
Publication Date: 2018-Feb
Pages: 2
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-921X
EISSN: N/A
Two-Dimensional Light Diffraction from an EPROM Chip
Ekkens, Tom
Physics Teacher, v56 n2 p70-71 Feb 2018
In introductory physics classes, a laser pointer and a compact disc are all the items required to illustrate diffraction of light in a single dimension. If a two-dimensional diffraction pattern is desired, double axis diffraction grating material is available or a CCD sensor can be extracted from an unused electronics device. This article presents an alternative to the above methods for obtaining a two-dimensional diffraction pattern. The advantages of this method are that no disassembly is required, the spacing in each axis is different, and many students are better able to understand how crystallography works when using objects instead of slits.
Descriptors: Introductory Courses, Physics, Science Instruction, Light, Educational Technology, Technology Uses in Education, Teaching Methods, Concept Formation, Scientific Concepts
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://aapt.scitation.org/journal/pte
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A