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lars gislen

Lars Gislén

Retired, affiliated researcher

lars gislen

Low-cost measurements of the 'resonant' wavelengths reflected by a compact disk under skimming rays

Author

  • M. P.Di Mauro
  • P. Onorato
  • L. M. Gratton
  • R De Luca
  • O Fiore
  • Lars Gislén
  • A Naddeo

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

Document type

Journal article

Publisher

IOP Publishing

Topic

  • Other Physics Topics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1361-6404