Timeline for How deep under water can humans open their naked eyes without damaging them?
Current License: CC BY-SA 4.0
8 events
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Feb 16, 2023 at 2:55 | comment | added | Loren Pechtel | @bdsl Yup, mask/goggles are basically corrective eyewear that since everyone needs the same prescription for and thus are stock rather than from an optometrist. | |
Feb 14, 2023 at 18:23 | history | edited | Neil_UK | CC BY-SA 4.0 |
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Feb 14, 2023 at 18:16 | comment | added | Neil_UK | @bdsl The air inside the mask is the dielectric constant that the eye has evolved to work with. Well, approximately at least. I'd imagine the refractive index of the gas increases slightly with pressure, but not to the extent that increases by replacing it with water. | |
Feb 14, 2023 at 18:11 | comment | added | bdsl | So the air inside the googles / mask is effectively another lens element between the eyes and the water. Importantly the rear of the air is shaped with a curve that conforms to the eye, and the front of the air is shaped with a flat or near-flat surface that conforms to the plastic surface. | |
Feb 14, 2023 at 15:31 | history | edited | Neil_UK | CC BY-SA 4.0 |
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Feb 14, 2023 at 15:25 | history | edited | Neil_UK | CC BY-SA 4.0 |
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S Feb 14, 2023 at 12:16 | review | First answers | |||
Feb 14, 2023 at 14:32 | |||||
S Feb 14, 2023 at 12:16 | history | answered | Neil_UK | CC BY-SA 4.0 |