Lars Gislén
Retired, affiliated researcher
Low-cost measurements of the 'resonant' wavelengths reflected by a compact disk under skimming rays
Author
Summary, in English
We demonstrate the construction and utilization of an affordable apparatus using readily available materials to accurately measure in a quantitative manner the wavelengths reflected by a compact disc (CD) under skimming light rays. In fact, only a limited number of wavelengths can be revealed when light rays from a white lamp are directed at a CD (or a DVD) in a manner that specifically selects the rays that graze the surface of the horizontally held disc. We compare the results with the ones obtained with a commercial spectrometer, finding that they are in good agreement among them and with the theoretical predictions.
Department/s
- Particle and nuclear physics
Publishing year
2024
Language
English
Publication/Series
European Journal of Physics
Volume
45
Issue
1
Full text
Document type
Journal article
Publisher
IOP Publishing
Topic
- Other Physics Topics
Status
Published
ISBN/ISSN/Other
- ISSN: 1361-6404