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  1. C

    Visibility of 445nm laser beam

    I am looking to buy the SF501B from Sci-Fi Lasers. I am trying to decide what power to get. I have never owned a blue laser nor have I seen one in real life. I have a 50mW 532nm from Ledshoppe that I use for night-time demonstrations along with star-pointing. But I would love to get a blue one...




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