Old 05-07-2008, 10:30 PM #1
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Default Strange phosphorescence

Why does my pink marker [s]phosphoresce[/s] fluoresce [s](is that the right word?)[/s] with GREEN light instead of ultra violet? I've never seen anything like this and I thought I've seen quite a lot.


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Old 05-07-2008, 10:56 PM #2
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Default Re: Strange phosphorescence

is it really phosphorescing? (dont see it orange)

hey what did u do to power that dx 50 with a power supply?
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Old 05-07-2008, 11:02 PM #3
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Default Re: Strange phosphorescence

Can't really tell from the pic but it's probably just fluorescence.Phosphorescence is glow in the dark kinda stuff :P

Some things fluoresce under green light too.The wavelength of the light emitted through fluorescence is always greater than the light causing it because there's an energy loss(longer wave photons have less energy).In your case green is used and orange is emitted(orange has longer wave than green , you see).Some stuff also works with blue, of course the shorter the wave , the more things fluoresce, so violet light works even better.Ultraviolet , especially shortwave, causes the most things to fluoresce.Some stuff even does this under red light, of course , the wavelength emitted is greater than the one causing it, and any longer than red and you have infrared, which is not really spectacular with the naked eye. :P
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Old 05-07-2008, 11:09 PM #4
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Default Re: Strange phosphorescence

Quote:
Originally Posted by nikokapo
is it really phosphorescing? (dont see it orange)

hey what did u do to power that dx 50 with a power supply?
I put the battery cap of a 1/2" laser pointer and it almost fits (stuck in place by cross-threading). There is a hole in the back of the cap for the wires.

it's [s]phosphorescing[/s] fluorescing all wavelengths between deep red and ~550nm yellow/green (seen through a CDROM spectrograph) I guess it's something like this sketch:

[edit] The actual yellow is more orangy than my original picture suggest. More like this: [ch9608][ch9608][ch9608][ch9608][ch9608][ch9608]
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Strange phosphorescence-spectrum_001.gif  
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Old 05-07-2008, 11:13 PM #5
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Default Re: Strange phosphorescence

Quote:
Originally Posted by Switch
Can't really tell from the pic but it's probably just fluorescence.Phosphorescence is glow in the dark kinda stuff :P
Ah that's what I mean. I thought this was just the Dutch word as I have never seen anyone using it in English until now.
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Old 05-08-2008, 12:18 PM #6
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Default Re: Strange phosphorescence

Well I guess fluorescence isn't monochromatic :P
English speakers use the glow-in-the-dark term rather than phosphorescence since it's shorter and easier yo understand I guess ;D
Other people posted pictures and videos of this too.For some reason many of them on a big, orange Tide jug. :P
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Old 05-08-2008, 03:42 PM #7
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Default Re: Strange phosphorescence

So here I create a thread dealing with fluorescence in the green lasers section only to get it answered in a different thread 10 minutes later :P

The same thing happened to me, but with an orange sticker instead of a pink marker. The weird thing is that a bit of the sticker was overlapped by clear tape, and that made it red instead of orange/yellow
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