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Building a ruby laser






When I was in 8th grade I wanted nothing more than to build a ruby laser. I made tons of designs for applications and researched it many hours every day. +1 for sharing
 
I also had a interest in ruby lasers in junior high. We had a "how it works" project and I chose ruby lasers as my topic.
 
That was an insightful video. The details are way over my head but nice to watch nonetheless.
 


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