xkcd: Laser Pointer - discu.eu

Reddit

What causes the appearance of pixelation in the spot emitted by a laser? http://xkcd.com/729/ 5 comments 23/2/2011 askscience

Linking pages

DIY Laser Safety: How to Test Pointers and Save Your Eyes | WIRED http://www.wired.com/wiredscience/2010/08/laser-pointer-hazard/ 0 comments

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