"The concentrated solar rays will burn through the filter and cause serious eye injury." The biggest way to make sure your eclipse glasses are safe to use is if they have ISO 12312-2 printed on ...
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Where to get solar eclipse glasses, eclipse safety and how to make your own solar viewersThe total solar eclipse is coming up fast ... Wherever you choose to get your eclipse glasses from, make sure they meet the safety requirements of the ISO 12312-2 international standard and ...
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