I got my blue-ray pointer finally, everything goes well, except one thing. Why it looks blue violet on wall, but only blue on paper? I like my baby so much!!!
I got my blue-ray pointer finally, everything goes well, except one thing. Why it looks blue violet on wall, but only blue on paper? I like my baby so much!!!
It's a phenomenon called fluorescence. Fine paper contains a fluorescent dye to make it look whiter. The dye absorbs light with short wavelengths and emits it at a longer wavelength. Another place you can find a similar dye is in your laundry detergent for white clothes that may contain an "optical whitener".
If you look around I bet you will find many fluorescent objects, even in nature. As soon as you see the dot change color that means the material is fluorescent. Anything that has a really strong color (neon-like) is likely to be fluorescent.
Try shining it at one of those highlighter pens, they glow really well!
yeah i was playing with mine last night and was actually laying in bed and shining it and when it hit my shower curtain it looks to be STRONG blue color! i wish it was that color all the time!
-Josh
Just make sure your pointing your projector at a surface that fluoresces, then no one will know its actually a violet, not a blue laser!
hahaha must find a giant shower curtain for projections!
-Josh
That would be interesting!
even more interesting what sometimes can be behind that curtain.
J/K
hahaha i need to hurry up and buy my fb3 so i can get on this!
-Josh