Em 15/1/2013 21:51, RussellMc escreveu:
>> Is there a simple or at least an inexpensive way to measure the spectrum
>> of a light source?
> Yes - and it's the same method used in some real and often expensive
> instruments/
> Use a diffraction grating to split the light into a spectrum and move
> a photo detector across the output (or use a moving mirror) or use a
> linear multi element detector.
>
> Diffraction gratings of acceptable performance for playing may be
> produced by using part of an unrecorded recordable CD.
> "Real" gratings can be had for prices from about nothing through forget-i=
t.
>
> Much on web under spectrometer and diffraction grating.
> Various DIY designs.


Can't a simple prism be used to separate the spectrum?

Isaac


--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.