You'd need to have it self-calibrating in real-time against a blank to be of any use.
Since that would involve splitting the beam through two samples, one test and one blank, I suspect the additional complexity of the optics would make up for any savings made in not needing an LED.
Even then, the variability between test samples, even calibrated in real-time against the same blank, may be too much to be of use in reliable science.
On 3 April 2012 20:06, Nathan McCorkle <nmz787@gmail.com> wrote:
On Tue, Apr 3, 2012 at 3:02 PM, Dakota Hamill <dkotes@gmail.com> wrote:I've considered that, wouldn't work in a lab without a light pipe
> Just a crazy idea, since we're on the topic of spec light sources.
>
> Could you use the sun as a light source for UV/Vis spec? I bet with some
> lenses you could get a nice beam, and wouldn't it contain UV as well?
> (unless the glass was UV transparent)
>
> I suppose if you have to use a diffraction grating and then stand there and
> slightly move the mirrors as the sun moves it isn't that great, but just
> seems like a waste of a perfectly
> good 2,000,000,000,000,000,000,000,000,000,000 kg nuclear fusion light
> source in the sky.
>
though... and the exact spectrum would be dependent on clouds, etc,
but if there was enough light and it wasn't changing rapidly, you
could just calibrate it out with a 'blank' sample
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Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics
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