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ERIC Number: EJ1017482
Record Type: Journal
Publication Date: 2013-May
Pages: 9
Abstractor: As Provided
ISSN: ISSN-0031-9120
Study of Planck's Law with a Small USB Grating Spectrometer
Navratil, Zdenek; Dosoudilova, Lenka; Jurmanova, Jana
Physics Education, v48 n3 p289-297 May 2013
In this paper an experiment to study Planck's radiation law is presented. The spectra of a heated furnace and of a halogen lamp under various conditions were measured with a small USB grating spectrometer and fitted using Planck's law. The temperature determined from the fit was then compared with the results of comparative temperature measurement techniques (e.g. with the measurement of filament temperature from the temperature dependence of filament resistance). We have shown that even spectrometers with a limited wavelength range may be successfully used to study the Planck distribution. The temperature obtained from the fit of Planck's law to the measured spectra was, within the uncertainty, close to the results of comparative techniques.
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Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education; Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A