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Blu-Ray's glowing silhouette...

Ace82

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I'm probably not the first one to discover this, but I thought I would share anyway.  

I bought some glow in the dark paint and applied it to a standard sheet of paper.  I plan on appying it to a poster board.  But first some experiments with the spectacular glowing effect of the amazing 405nm violet blu-ray.

How I thought of this, don't ask.  I was just writing to my lady in bed with it.  ::)

To cast a shadow by putting an object on the paper and trace it with the laser focused large (about 1/2").  Then remove and see a perfect silhouette!  :D
 

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I love doing that! I have an old Glow in the Dark writing tablet that works great with blu-rays, the "shadows" it leaves behind look exactly like you pictures.
 
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Murudai said:
Oh man, so cool.

Does this only work for blu-ray?

i think so cuz the paint itself is green and it wouldn't absorb green i'm guessing. i think i saw someone ask that somewhere else as well.
 

Ace82

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Glow in the dark objects need uv to absorb and release photons. 405nm is close to uv, red, green other color lasers are further and non-effective on glow in the dark materials. The sun has great uv light therefore has even better effect on glow in the dark materials then blu-ray lasers. (Open can burners, can't say I know). ;)
 

Switch

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Ace82 said:
Glow in the dark objects need uv to absorb and release photons.  405nm is close to uv, red, green other color lasers are further and non-effective on glow in the dark materials.  The sun has great uv light therefore has even better effect on glow in the dark materials then blu-ray lasers.  (Open can  burners, can't say I know).  ;)

Red burners wouldn't work.You need short waves for this. There are glow in the dark stuffs for green lasers too(they glow red) but of course , the red would be dimmer than the green from normal GITD stuff.GITD stuff for red lasers would probably glow in IR and be useless. :p
 

Ace82

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Switch said:
[quote author=Ace82 link=1210211477/0#5 date=1210225331]Glow in the dark objects need uv to absorb and release photons.  405nm is close to uv, red, green other color lasers are further and non-effective on glow in the dark materials.  The sun has great uv light therefore has even better effect on glow in the dark materials then blu-ray lasers.  (Open can  burners, can't say I know).  ;)

Red burners wouldn't work.You need short waves for this. There are glow in the dark stuffs for green lasers too(they glow red) but of course , the red would be dimmer than the green from normal GITD stuff.GITD stuff for red lasers would probably glow in IR and be useless. :p[/quote]

I didn't know there were gitd materials for green wavelengths!  And it emits red?  Wow, I need to get some!  :p Oh, and I wasn't sure if the sun or blu-ray burner is more effective on gitd material, there is probably a limit though.  
 

Switch

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Sunlight has shorter wave UV , but I guess a blu-ray burner would be more powerfull and charge that thing up faster. :p
 
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Ace82 said:
[quote author=Switch link=1210211477/0#7 date=1210249341][quote author=Ace82 link=1210211477/0#5 date=1210225331]Glow in the dark objects need uv to absorb and release photons.  405nm is close to uv, red, green other color lasers are further and non-effective on glow in the dark materials.  The sun has great uv light therefore has even better effect on glow in the dark materials then blu-ray lasers.  (Open can  burners, can't say I know).  ;)

Red burners wouldn't work.You need short waves for this. There are glow in the dark stuffs for green lasers too(they glow red) but of course , the red would be dimmer than the green from normal GITD stuff.GITD stuff for red lasers would probably glow in IR and be useless. :p[/quote]

I didn't know there were gitd materials for green wavelengths!  And it emits red?  Wow, I need to get some!  :p Oh, and I wasn't sure if the sun or blu-ray burner is more effective on gitd material, there is probably a limit though.  [/quote]


i want some too!!

where can u find gitd for green??
 
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In action! By Timelord.
[media]http://www.youtube.com/watch?v=rdMFT26-3Zs[/media]
 

Ace82

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blu ray works too! Probably the actual purple visible longer wavelength gets partially absorbed and regular gitd absorbs shorter invisible uv wave lengths? :-?

I also noticed, that red very very slightly gets absorbed in regular gitd stuff. Also, I actually desorbed light left from my blu-ray with my red, kinda like an eraser!

Thanks for the video! But do you know if you can get it on a larger surface, or in a material you can apply?
 
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Ace82 said:
But do you know if you can get it on a larger surface, or in a material you can apply?

Nope, sorry.

I don't have this myself you know. ;)
 




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