YSK: You can do a simple check on your solar eclipse…
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YSK: You can do a simple check on your solar eclipse glasses before August 12
**Why YSK: Because counterfeit and incorrectly manufactured eclipse glasses have been a recurring problem before major eclipses.**
In 2024, I bought a pair of eclipse glasses that looked legitimate, but when I tried them indoors I realized something was wrong: I could see ordinary objects like ceiling fans and other details through them. That sent me down a rabbit hole learning how these filters are supposed to work, and how the ISO 12312-2 standard came about.
Three quick checks:
1. **Look for markings indicating compliance with ISO 12312-2.** This is not a guarantee of safety, but it's a good first sign.
2. **Try them indoors first.** You should not be able to see normal objects or room details through properly rated eclipse glasses. Seeing the filament of a very bright light bulb can be normal.
3. **Check the manufacturer.** The American Astronomical Society maintains a list of reputable eclipse glasses suppliers.
The interesting part is that ISO 12312-2 is not just a random label printed on eclipse glasses. It was created specifically to define how safe solar viewers should perform.
**Sources/Citations:**
* American Astronomical Society - Solar Eclipse Eye Safety / Reputable Suppliers: https://eclipse.aas.org/eye-safety/viewers-filters
* NASA - Eclipse Eye Safety: https://science.nasa.gov/eclipses/safety/
#education
**Why YSK: Because counterfeit and incorrectly manufactured eclipse glasses have been a recurring problem before major eclipses.**
In 2024, I bought a pair of eclipse glasses that looked legitimate, but when I tried them indoors I realized something was wrong: I could see ordinary objects like ceiling fans and other details through them. That sent me down a rabbit hole learning how these filters are supposed to work, and how the ISO 12312-2 standard came about.
Three quick checks:
1. **Look for markings indicating compliance with ISO 12312-2.** This is not a guarantee of safety, but it's a good first sign.
2. **Try them indoors first.** You should not be able to see normal objects or room details through properly rated eclipse glasses. Seeing the filament of a very bright light bulb can be normal.
3. **Check the manufacturer.** The American Astronomical Society maintains a list of reputable eclipse glasses suppliers.
The interesting part is that ISO 12312-2 is not just a random label printed on eclipse glasses. It was created specifically to define how safe solar viewers should perform.
**Sources/Citations:**
* American Astronomical Society - Solar Eclipse Eye Safety / Reputable Suppliers: https://eclipse.aas.org/eye-safety/viewers-filters
* NASA - Eclipse Eye Safety: https://science.nasa.gov/eclipses/safety/
#education
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