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  1. J

    Distance of laser focus?

    Hi yall, newbie here. Ive been lurking for a while and decided to join. Main thing Ive been wondering is, is there a limit to how far one can focus a to? For example, would it possible to focus a laser to like 5 light-seconds or so?
    • jbe
    • Thread
    • Replies: 16
    • Forum: General


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