The optical properties of a compact disc (CD) under “skimming” light rays have been analyzed. We have noticed that a clear green line can be detected when the disc is irradiated with light rays coming from a lamp in such a way that only those skimming the CD, held horizontally, are selected. We provide a physical interpretation of this phenomenon on the basis of elementary optics concepts. Extension of these concepts to digital versatile discs (DVDs) is given.

A compact disc under skimming light rays

De Luca, R.
Membro del Collaboration Group
;
Di Mauro, M.
Membro del Collaboration Group
;
Fiore, O.
Membro del Collaboration Group
;
Naddeo, A.
Membro del Collaboration Group
2018-01-01

Abstract

The optical properties of a compact disc (CD) under “skimming” light rays have been analyzed. We have noticed that a clear green line can be detected when the disc is irradiated with light rays coming from a lamp in such a way that only those skimming the CD, held horizontally, are selected. We provide a physical interpretation of this phenomenon on the basis of elementary optics concepts. Extension of these concepts to digital versatile discs (DVDs) is given.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11386/4705115
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