Calculate wavelength from a known distance and color for Helium

AI Thread Summary
The discussion centers around calculating the wavelength of Helium based on known color ranges and a provided chart of specific wavelengths. The original poster seeks to determine the exact wavelength corresponding to the colors violet, blue, green, orange, yellow, and red, using the chart that lists wavelengths for Helium. They clarify that the "distance" mentioned initially is not relevant to the calculation. The key issue arises with the color yellow, which falls within the 550-580 nm range, as there is no exact match in the provided wavelengths. The closest option is 587.6 nm, which the poster considers using despite it not being an exact fit. The conversation highlights the importance of matching color ranges to specific wavelengths in spectral analysis.
NIN_GIRL81
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Hi all!

I just joined the forums and hopefully my question is in the right place and isn't a lame one but I'm stuck so here goes:

I want to know how to calculate wavelength from a known distance and color for Helium. I need exact wavelength. I already have the ranges obviously. Usually it's wavelength=c/v but I don't have frequency so any help would be greatly appreciated. Thanks.

:)
 
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What do you mean by distance?
Also color is frequency... so presumably if you know one - you know the other.
 
lzkelley said:
What do you mean by distance?
Also color is frequency... so presumably if you know one - you know the other.

sorry, I just realized that I was given a chart of Helium Wavelengths and the distances are to be used for something else:

447.1
468.6
471.3
492.2
501.6
587.6
667.8
706.5

I have six colors: violet, Blue, Green, Orange, Yellow, and Red which all have ranges.
violet: 380-420
blue: 440-470
green: 500-520
orange: 580-620
yellow: 550-580
red: 620-700

I think I am supposed to pick the wavelength from the given chart based on these ranges. Most work except for yellow. Yellow is in 550-580 and I don't see a wavelength that would fit in this range that is given above. And I must have six colors so I can't ignore the yellow.
 
what about the 587.6, its pretty close?
 
Yeah I guess, I will have to use that. I don't see another option. Thanks anyway, i guess this doesn't really count as a legitimate question; more of a weird data setup issue.

:)
 

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