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A cat demonstrating a pair of eclipse glasses. Solar viewers (also known as solar viewing glasses or solar eclipse glasses) are special eyewear designed for direct viewing of the Sun. Standard sunglasses are unable to filter out eye-damaging radiation. Solar viewers can be used for safe viewing of solar events such as eclipses.
Before 2017, it had been more than three decades since the last total solar eclipse was visible from the U.S. in 1979. But just because this once-in-a-lifetime event is happening twice within a ...
Sunglasses don’t block infrared radiation. For safe manufacturers and resellers of eclipse glasses and filters for optical devices, including cameras and smartphones, check out the list curated ...
Frames and glasses must be designed so that small pieces of the glasses such as screws and glass particles cannot become dislodged, then float and be inhaled. 90% of astronauts wear glasses in space, even if they do not require corrective glasses on Earth, because zero-gravity and pressure changes temporarily affect their vision.
Some video cameras have a night mode that gives an IR image under the right conditions. [5] Digital cameras can also be used. [6] Devices for airport security are able to see through clothing quite well. Some of these are true X-ray devices, using backscatter X-rays. The devices are not portable and use a typical X-ray display screen, not goggles.
Each pair of glasses reportedly costs Meta $10,000 to make, and the company says it needs time to get them to a price that makes them plausible — think something in the $1,000-ish range, like a ...
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