We’re often warned about how dangerous small commercial lasers can be for our eyes yet technologies like FaceID projects light in our faces many times a day.
Why is FaceID safe? Because it’s low enough power or because it’s in the non-visible spectrum?
Can the non-visible spectrum be dangerous for our eyes?
In: 40
Short answer, yes in sufficient doses. Just about everything at a higher frequency can damage the human eye and the only reason we don’t suffer from it is because we take it in such low amounts.
For example, the single flash you get from a medical x-ray is harmless but if the doctor pounded on the button as fast as he could for a day you’d suffer a dangerous dose of radiation. Same with UV rays. A little is good for your health but too much will cause sunburns . Just imagine sunburns on the insides of your eyes.
We’re often warned about how dangerous small commercial lasers can be for our eyes yet technologies like FaceID projects light in our faces many times a day.
Why is FaceID safe? Because it’s low enough power or because it’s in the non-visible spectrum?
Can the non-visible spectrum be dangerous for our eyes?
In: 40
Short answer, yes in sufficient doses. Just about everything at a higher frequency can damage the human eye and the only reason we don’t suffer from it is because we take it in such low amounts.
For example, the single flash you get from a medical x-ray is harmless but if the doctor pounded on the button as fast as he could for a day you’d suffer a dangerous dose of radiation. Same with UV rays. A little is good for your health but too much will cause sunburns . Just imagine sunburns on the insides of your eyes.
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