Seeing the Fraunhofer lines with only a diffraction grating and a slit

Details Seeing the Fraunhofer lines with only a diffraction grating and a slit Seeing the Fraunhofer lines with only a diffraction grating and a slit

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993amjph..61..632l&link_type=abstract

American Journal of Physics, Volume 61, Issue 7, pp. 632-636 (1993).

Physics

Demonstration Experiments And Apparatus, Holographic Optical Elements, Holographic Gratings, Spectroscopy And Spectrophotometry

Scientific paper

The construction of a simple spectroscope is described, using a box with an adjustable slit, a holographic grating, and a wavelength calibrated strip. The grating spacing is calculated to have enough resolving power to allow the Fraunhofer lines in the solar spectrum to be observed by the naked eye. Furthermore, the calibration strip allows the user to determine the wavelengths of the spectral lines. While not having the accuracy and the resolving power of more elaborate instruments, the spectroscope's inexpensiveness and simple operation will make it a useful instrument in a classroom environment.

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