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Recent content by stevenkelby

  1. S

    Neat slow motion video of laser hitting water drop

    Yay XKCD! Laser Umbrella
  2. S

    445 divergence?

    Using this calculator: pseudonomen137's JScript mRad Calculator The results for your 3 measurements are 3.3, 3.9 and 4.1 The variance is your measurement error but it gives a good idea, probably around 3.5 which is good :)
  3. S

    What is the maximum distance can a laser permanently blind someone?

    Good question. My instinct is to assume you want to avoid blinding anyone... Great info, thanks!
  4. S

    Most powerful laser pointer?

    Not all the people here :whistle: (posts 3 and 10) Don't buy those lasers. Get something from a trusted seller here: Laser Pro Shop - Laser Pointers Buy, Sell, & Trade - Laser Pointers
  5. S

    Most powerful laser pointer?

    I wish sellers would quote those specs. I haven't seen either power density (W/mm^2) or beam divergence (mRad) specified for any lasers I've either bought or looked at for sale.
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