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  • TheHermit's Avatar
    Today, 09:44
    Laserium shows began at Griffith Park's planetarium in 1972. I 'experienced' my 1st in 1977, before becoming a laserist the following year. The RYGB laser was a Spectra Physics krypton 164, with broadband optics and optimized gas pressure to produce the 4 distinct colors. Initially, the 4 X/Y...
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