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What kind of laser pointer to buy? (wavelength, wattage)

Couchman

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Hi, I recently bought a few prisms, and wanted to have some fun experimenting with the way lasers would refract through them. However, when I went to go get a laser to shoot through the prisms, I realized that they were all non-visible!

So, my question is, what wavelength and power should I buy in order to be able to see the laser in the air and shining inside the prism? I'm don't know too much about laser pointers, so I figure here is a good place to ask.
 

RedDart

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Don't make the mistake of getting the pointer's reflection onto itself, it broke my red 200mW!
 
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And buy the safety goggles FIRST.
That step is very, very, very, very, very damn important damn it!

With that said, Welcome to the Forum of a lifetime.
Be safe and have fun. Read the Stickies.
Add your approximate location to your profile and stick around for a while.
 
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