Compact disc diffraction

Nöldeke, C.

doi:10.1119/1.2343118

Cited by 20 publications

(11 citation statements)

References 1 publication

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“…The resulting diffraction pattern corresponds to Fraunhofer diffraction. 9,10 This simple experiment is similar to published experiments [4][5][6][7][8] in which students estimate the track spacing on a CD by shining a laser at a CD and measuring the positions of the different diffraction orders. In our experiment we need the room to be very dark to relate the diffraction pattern to the type of CD and a distance of Ϸ1 m between the CD and the screen to clearly observe the difference of the zeroorder diffraction patterns.…”

Section: Diffraction Experimentssupporting

confidence: 58%

A simple experiment to distinguish between replicated and duplicated compact discs using Fraunhofer diffraction

Fernández-Dorado

Hernández‐Andrés

Valero

et al. 2008

American Journal of Physics

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Compact discs are a useful tool for studying interference and diffraction. We propose an easy and inexpensive experiment to distinguish between replicated and duplicated compact discs based on Fraunhofer diffraction. The nonvisible differences of the surface of compact discs depend on the way that they have been manufactured and can be seen by using a laser beam in a simple diffraction experiment. The method has been tested on many different brands of CDs and is reliable.

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Section: Diffraction Experimentssupporting

confidence: 58%

A simple experiment to distinguish between replicated and duplicated compact discs using Fraunhofer diffraction

Fernández-Dorado

Hernández‐Andrés

Valero

et al. 2008

American Journal of Physics

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“…3). 13,14 While it is possible to use the grating both in reflection and transmission, we asked the students to work in transmission alone for safety reasons (in order to avoid laser question we are confronted with is therefore how to "reduce" the acceleration so that it becomes feasible to measure.…”

Section: Dvd As Diffraction Grating and The Wave Nature Of Lightmentioning

confidence: 99%

Physics Laboratory at Home During the COVID-19 Pandemic

Campari

Barbetta

Braibant

et al. 2021

The Physics Teacher

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The pandemic triggered by the SARS-CoV-2 virus has produced worldwide interruptions of face-to-face teaching activity in both schools and universities. In Italy, the quarantine began in the second half of February 2020 and lasted for all the second semester of lectures. The University of Bologna, where all the authors of the present article are based, developed and activated several interfaces necessary to efficiently deliver online teaching courses with the utmost speed. The framework used by the authors is based on a common platform, Microsoft TEAMS, available to all teachers at Bologna University.

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“…J. Ouseph, Physics Department, University of Louisville, KY S everal papers have been published on the use of a CD as a grating for undergraduate laboratories and/or for high school and college class demonstrations. [1][2][3][4][5][6][7] Four years ago The Physics Teacher had a spectacular cover picture showing emission spectrum as viewed through a CD with no coating. 8 That picture gave the impetus to develop a system that can project the spectra of light falling on a CD on a white board or a screen.…”

Section: Rainbowsmentioning

confidence: 99%