3 ms·

> You receive a couple hundred watts of near infrared radiation (ie the 1550 nm in the laser) just by being in direct sunlight. The visible light in sunlight m

by Sephr 9y ago

> You receive a couple hundred watts of near infrared radiation (ie the 1550 nm in the laser) just by being in direct sunlight. The visible light in sunlight makes pupils dilate, decreasing the amount of infrared energy that reaches and heats the retina.

valuearb 9y ago
You don't think the safety charts don't already understand that effect?
hwillis 9y ago
That's irrelevant, this assumes the spot is smaller than the pupil. The pupil would have to grow to 800x the area for it to even matter in the first place.