The result is a rainbow pattern captured by the webcam, and by putting different translucent materials in front of the light source, the spectrum slightly changes. Of course a DIY spectrometer is ...

First, as an astrophotonic instrument, it was used to analyze the solar spectrum. Sunlight gathered by a telescope was ...

112, No. 767 (January 2000), pp. 108-118 (11 pages) ABSTRACT We describe a Fourier transform spectrometer for measurements of atmospheric transmission in the spectral interval 300 GHz to 3.5 THz. This ...