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- IR is just super red light. It's not significantly more dangerous as looking at a lightbulb can be, except human eyes cannot perceive IR and can't contract pu
by numpad0 2y ago
- IR is just super red light. It's not significantly more dangerous as looking at a lightbulb can be, except human eyes cannot perceive IR and can't contract pupils or stare away by reflexes.
- UV is baby step towards X-rays. It's technically super blue light, but it's entering region where lights start splitting chemical bonds and bleaching stuffs like pathogens and human eyes.
- LASER is perfectly parallel beams of light. Because it's perfectly parallel and do not diverge, it behaves like sun under magnifying glass at all points in its path, which can be dangerous when the "sun" is high and "glass" focusing it tight.
High power IR lamp illuminating audiences from afar is almost safe as any searchlights. IR lasers can be dangerous. UV lamps are not so safe, UV lasers would be bad.
- delfinom 2y agoIR isn't just super red light, it's heat. Lol
- rcxdude 2y agoSo is regular light, in that sense. The IR that's used for this kind of application is 'near infrared', which is much closer to light than the IR emitted by most warm objects.
- erik_seaberg 2y agoIt's light, and some animals can see it, just not us. https://en.wikipedia.org/wiki/Infrared https://en.wikipedia.org/wiki/Infrared has some pictures from the right kind of cameras and telescopes.
- svachalek 2y agoIt is the primary frequency of black body radiation at Earthly temperatures. But it is not the heat itself.
- TeMPOraL 2y ago> LASER is perfectly parallel beams of light. Because it's perfectly parallel and do not diverge, it behaves like sun under magnifying glass at all points in its path To first approximation, in the typical situations regular people deal with lasers. Inverse square rule still applies; laser light does spread out with distance. That nitpick aside, your description is spot on.
- HeyLaughingBoy 2y agoStandard off the shelf, 5W white LED emitters come with a warning against eye damage from staring directly into the beam. Those suckers are bright, and while your pupils will automatically contract to minimize damage from visible light, the same is not true when they're hit with IR.