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For the term "homemade solid state laser".

Do It Yourself: Simple TEA Ultraviolet Laser

Make yourself a real laser out of scraps, junk, pennies and clothespins! Inspired by Nyle Steiner’s work at http://www.sparkbangbuzz.com/tealaser/tealaser7.htm Thanks, Nyle! I learned a lot from this project, and it works surprisingly well. WARNING:…

My Wife Gets Lazard… Old School .95 milliwatt 632.8 nanometer Hel. Neon Laser Tube… Cool Stuff

no persons was killed or damaged during the making of this film. My Wife Gets Lazard… Old School .95 milliwatt 632.8 nanometer Hel. Neon Laser Tube… Cool Stuff This came out of an old…

Lead-Alum — Solid Crystal rechargeable battery

This shows a homemade rechargeable Lead-Alum battery that has a solid Alum crystal formed between the anode and cathode plates. There is no seperator between the plates–only the crystal. Powdered Alum was heated to…

Homemade rechargeable battery—dissected after load testing

This shows my homemade rechargeable “solder battery” dissected after being load tested for several days. The cell still functions perfectly but a dark redish brown oxide deposit did fall off the positive electrode after…