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Additive color mixing

  • Thread starter Deleted member 16589
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Deleted member 16589

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OK so a few weeks ago I was thinking that In science they use to always tell us red blue and green light makes white.
and they would show us a diagram like this.

And some times they would get some flashlights and attend to create it witch never really worked.
Then it dawned on me that other than a computer or tv screen I never have actually seen a working example.
so I decided to build one.

So i projected a red a blue and a green laser on a piece of paper and then I used a lens to re-project that image on another sheet on the oposit side of the lasers and here is the result


Unfortunately that was fuzzy.
and because of my lens-holder the dots were not perfectly round
So I grabbed a lens with a metal casing on it and got took some more shots with my dads camera to try to get a better image.


To my surprise the camera picked up the magenta in the center as tan


But I was not done yet I wanted to try something I saw in physics last year
making a three colored shadow

:drool::drool::drool::drool:

Here is a picture of the lens holder from the first shot
to see what made those divets


I hope you like it. :D :D :D
It took me a few weeks a couple minutes a day to set up.
 
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LaserCo

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That shadow picture is real cool!

edit: what the heck? nobody even replied?
 
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Ears and Eggs

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Woah, awesome pics. :D What were the three lasers you used to get that balance?
 

daguin

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The musings of a mad scientist are not always appreciated for their beauty

Peace,
dave
 
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Deleted member 16589

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Tanks guys I have better pics of this but never uploaded since no one replied time to upload.

Woah, awesome pics. :D What were the three lasers you used to get that balance?
They were 473nm 532nm and 650nm
 
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Antharak

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Really nice work!
The pencil shot is outstanding. This is the kind of thing I'm getting back into lasers for.
 

pschlosser

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I love how the pencil shadow shot casts shadows of the secondary colors. Magenta, Cyan and Yellow.

+1 cool.
 
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Deleted member 16589

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More pics anyone :drool:

In these I used the hole front element from my telescope even the aluminum housing. This was to get rid of those divots and give nice clean circles.




 




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