Sub_Umbra
Flashlight Enthusiast
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ledvador said:
i'm wondering witch blue is used for forensic stuff, royal blue, dental blue, or regular blue?
who knows?
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Many blues. It depends on what you're looking for. Different substances floresce under different wavelengths of light. Use whatever color will show you what you're looking for.
From a practical point of view, if what you are looking for will floresce under a wider range of wavelengths, a decision of which to use may be a matter of convenience. I would imagine that there are times when using a light with a shorter wavelength (and thus a more visible beam) might make a search easier than a color with all or nearly all of its energy in a part of the spectrum which is invisible to the human eye. If a more visible beam is used (near UV), you can use it to illuminate the area that you are searching and then slip on a pair of glasses that block blue so you can detect faint florescence. If it's really dark and you use a light in the true UV range you will be tripping over things that don't floresce (most things) because little of the beam will be visible to your eye.
ledvador said:
i'm wondering witch blue is used for forensic stuff, royal blue, dental blue, or regular blue?
who knows?
[/ QUOTE ]
Many blues. It depends on what you're looking for. Different substances floresce under different wavelengths of light. Use whatever color will show you what you're looking for.
From a practical point of view, if what you are looking for will floresce under a wider range of wavelengths, a decision of which to use may be a matter of convenience. I would imagine that there are times when using a light with a shorter wavelength (and thus a more visible beam) might make a search easier than a color with all or nearly all of its energy in a part of the spectrum which is invisible to the human eye. If a more visible beam is used (near UV), you can use it to illuminate the area that you are searching and then slip on a pair of glasses that block blue so you can detect faint florescence. If it's really dark and you use a light in the true UV range you will be tripping over things that don't floresce (most things) because little of the beam will be visible to your eye.
