Benm
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- Aug 16, 2007
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Would goggles really do much if you got a 20W beam in your eye?
Yes, for a short period of time. Typical goggles have optical densities in the order of 3, reducing that 20 watts to 20 mW or less. Not exactly safe, but it makes the difference between definite damage and probable recovery.
Such powerful beams do melt through goggles though - i've tried 1 watt of 445 and that took a bit over a minute to chew through. But if it even provides a few seconds of protection, you'd be likely to get out of harms way in the 20 watt scenario.