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Old 10-12-2014, 01:56 AM #1
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Default passing 532 through Yellow highlighter dye

Hey guys

While trying to find out something my 12 year old daughter could do as a science experiment for school we were messing around with the dye out of a yellow high lighter and were testing wavelengths on the yellow dye. We came up with some predictable results on most of them. The one that kind of was the shock was the 532 nm at 40mw and the results were nothing sort of cool. any way I took some pictures and let you be the judge.





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Old 10-12-2014, 02:18 AM #2
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Default Re: passing 532 through Yellow highlighter dye

Cool

Nice pics
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Old 10-12-2014, 03:25 AM #3
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Default Re: passing 532 through Yellow highlighter dye

The 532nm is causing the dye to fluoresce. 405nm should light it up even better. With a low powered 405 it should look better with the laser being less visible, and the dye more reactive.
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Old 10-12-2014, 03:47 AM #4
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Default Re: passing 532 through Yellow highlighter dye

A yellow beam! Ahhhhh

Awesome Jeff!

-Alex
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Old 10-12-2014, 08:50 AM #5
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Default Re: passing 532 through Yellow highlighter dye

Nice pics, I'd love to do this but 200mW (atleast 100mW of green, rest is ir) of green is a little too scary to do this with.

Always thought 405 would have the coolest results.
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Old 10-12-2014, 11:17 AM #6
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Default Re: passing 532 through Yellow highlighter dye

I'm confused. You got a whole jar of fluid out of a highlighter?
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Old 10-12-2014, 12:33 PM #7
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Default Re: passing 532 through Yellow highlighter dye

Neat find
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Old 10-12-2014, 01:42 PM #8
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Default Re: passing 532 through Yellow highlighter dye

Quote:
Originally Posted by starlight View Post
I'm confused. You got a whole jar of fluid out of a highlighter?
The dye is diluted in water
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Old 10-12-2014, 04:49 PM #9
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Default Re: passing 532 through Yellow highlighter dye

I have had the same thing happen with an orange colored car washing fluid.
The interesting thing is that at 405nm nothing interesting happens.

Here is the picture. 532nm is 60mW, 405nm is 32mW and 650/660nm is 15mW
The picture is taken looking down into a plastic cup.



It turned out decent for a phone's camera
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Old 10-12-2014, 05:41 PM #10
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Default Re: passing 532 through Yellow highlighter dye

I've noticed odd things when using 532 and 405 through tonic water and using safety goggles. There appeared to be fluorescence but it looked like it was towards the red end of the spectrum. It was hardly noticeable but I'm sure it was there.
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Old 10-12-2014, 10:05 PM #11
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Default Re: passing 532 through Yellow highlighter dye

Interesting. Still trying to wrap my mind around a green light causing anything to fluoresce. Thanks for your help on my new purchase. For that, I am going to rep+ for your help and support.
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Old 10-12-2014, 11:20 PM #12
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Default Re: passing 532 through Yellow highlighter dye

5mw of 650nm


87mw of 520nm



1.5w off 445


this is other wavelength passed though the same medium
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Old 10-13-2014, 02:35 AM #13
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Default Re: passing 532 through Yellow highlighter dye

neat! I like the top down view best.

Cool tinkering...
/c
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Old 10-13-2014, 12:52 PM #14
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Default Re: passing 532 through Yellow highlighter dye

Quote:
Originally Posted by starlight View Post
I'm confused. You got a whole jar of fluid out of a highlighter?
https://www.youtube.com/watch?v=zIpoLiesBgg

One day you will do this
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Old 10-13-2014, 07:19 PM #15
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Default Re: passing 532 through Yellow highlighter dye

yeah. fun stuff. ^^ florescent papers and cardstock do this too. UV lasers do similar things without being visible at all...I remember I got a nice sunburn from a large series 74 HeCd one time...

Last edited by ultimatekaiser; 10-13-2014 at 07:20 PM.
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Old 10-15-2014, 04:34 AM #16
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Default Re: passing 532 through Yellow highlighter dye

Quote:
Still trying to wrap my mind around a green light causing anything to fluoresce.
The green photons are absorbed and excite the molecular electron orbitals, which then re-radiate the energy as the orbitals relax to the ground state. Some of the energy is radiated as a lower-energy photon (in this case, yellow) and the remainder is converted to heat. Pretty much any wavelength of light can excite fluorescence, even IR. It just depends on the specifics of a substance's molecular orbitals; it is not a UV-only phenomenon.
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