Angle of deflection of diffraction Grating
Presumably the angle of deflection of various colours in the spectrum
depends upon the maker of the diffraction grating.
I have made a new spectrometer where I can measure the angle of
deflection for various colours of the spectrum of a diffraction grating
purchased from SciToys. Catalogue URL:
http://www.scitoyscatalog.com/product/DIFFRACTION.html
As I purchased this film a few years ago, I cannot guarantee that the
diffraction grating film now sold by SciToys is the same as the grating
that I tested.
I intend to do the same test with a diffraction grating purchased from
Rainbow Symphony Inc, Reseda, CA 91335. URL:
www.rainbowsymphony.com
I have been able to correlate the angle of deflection with the frequency of
the light in the spectrum by using various laser light pens.
I intend to do a test with a CFL bulb, the spectrum of which seems to be
well known, particularly the mercury lines.
I hope to be able to do a test with a triangular glass prism, if I can fit the
prism inside the spectrometer.