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Getting Started with Electronics
yes, PLEASE listen to this about how dangerous lasers can be., I am now permanently blind in a small 1mmx1mm up close spot that progressively gets bigger the farther away at a max of 5mm. This was caused not due to stupidity but a freak accident. Sadly its dead center of the eye almost but its been almost 2 years. it seems to hopefully be getting better, but I doubt it. PLEASE take lasers seriously. They can be a fun toy but can be very hazardous. You've been warned!