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Very interesting, sublimation, I was always too chicken to test it.

Faster than Kwai Chang Caine you are

Thank you for the photos. It really helps with understanding lasers.

NO, dry ice is -109F. If you do touch it with bare skin the skin will freeze, but the sensation feels like a burn. My friend worked as a carpenter at the science station in Antarctica. On his first day he took off a glove and reached into a box of bolts....BIG MISTAKE ! and that was only - 70F.

What are the possibilities if the Hubble was reconfigured to be a focusing lens?

Thanks Alan, If there is ever a drought in your part of the world Wisconsin will be happy to send you water....as long as you order it in bottles with barely and hops! Thanks Greenlander, I can already see that you contribute a lot to the forum...Cool! Because of guys like you, I am having...

Hello Laser Gurus, I am here to feed the fascination. Truly I am beginning my journey in lasers. I hope to start exploring what is possible with some of the basic principles of laser light. I am curious what folks do with their lasers beyond beam shots. My home is in Western Wisconsin...