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Splitting light into colors, mathematical expression (fourier transforms) 
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#1
Dec412, 07:58 PM

P: 4

I am trying to solve a problem that includes a function of the light hitting a certain area. My question is, how would I change a function G(x) of photons hitting a certain area to include just photons of a certain wavelength, say red light. I feel like this could be accomplished using a fourier transform and de broglie's law, but I'm not sure. Can someone please help, just for a general gaussian function G(x)?



#2
Dec412, 09:02 PM

PF Gold
P: 1,168

What does this function represent? It may help if you post more detailed specification of your problem.



#3
Dec512, 04:54 PM

P: 4

Basically, given a function that gives the number of photons hitting a certain area, I want a mathematical way to determine how many of those photons are of a specific frequency (such as red light).



#4
Dec512, 05:07 PM

P: 32

Splitting light into colors, mathematical expression (fourier transforms)
You mentioned Fourier Transform, yes, it does transform between time domain to frequency domain, but here the "frequency" has a different meaning than what you might have in mind (it means the spatial periodicity of the underlying timedomain function, not the frequency of the EM wave) 


#5
Dec512, 05:31 PM

P: 4




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