Literaturnachweis - Detailanzeige
Autor/in | Azooz, A. |
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Titel | Experimental demonstration of Doppler spectral broadening using the PC sound card. |
Quelle | In: American journal of physics, 75 (2007) 2, S. 184-188
PDF als Volltext |
Sprache | englisch |
Dokumenttyp | online; gedruckt; Zeitschriftenaufsatz |
ISSN | 0002-9505; 1943-2909 |
DOI | 10.1119/1.2372466 |
Schlagwörter | Akustik; Messwerterfassung; Physik; Spektroskopie; Soundkarte; Soundkarte; Messwerterfassung; Akustik; Dopplereffekt; Physik; Spektroskopie |
Abstract | The Doppler broadening of audio spectral lines is demonstrated using a simple experimental setup. The sound from a vibrating loudspeaker is received by a microphone that is connected to a computer sound card. A data-acquisition program is used to acquire the sound data. Fourier analysis is done to obtain the spectral power density of the sound received by the microphone. The results demonstrate spectral broadening similar to that which takes place in atomic and molecular spectroscopy. The experiment demonstrates both the Doppler effect and spectral broadening in the undergraduate physics lab. © 2007 American Association of Physics Teachers. |
Erfasst von | Arbeitsgruppe Didaktik der Physik, Universität Osnabrück |
Update | 2007/2 |