I am just starting but my initial interests are in the non-visible=20
areas. Sensing will need to be considered as well.
Just curiosity, no particular objective.


On 1/15/2013 9:43 PM, Isaac Marino Bavaresco wrote:
> Em 15/1/2013 21:51, RussellMc escreveu:
>>> Is there a simple or at least an inexpensive way to measure the spectru=
m
>>> 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-=
it.
>>
>> Much on web under spectrometer and diffraction grating.
>> Various DIY designs.
>
> Can't a simple prism be used to separate the spectrum?
>
> Isaac
>
>

--=20
John Ferrell W8CCW
That which can be destroyed by the truth should be.
P.C. HODGELL
  =20


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