We.Love.Privacy.Club xkcd@feeds.twtxt.net "USV-C Ultra-Serial Violet C light is unpolarized, so you don't have to flip the polarizing filter over when you get the orientation wrong the fi ..."

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Wed, Aug 25 2:00PM 2021 (4y ago)

USV-C
Ultra-Serial Violet C light is unpolarized, so you don't have to flip the polarizing filter over when you get the orientation wrong the first time. ⌘ Read more

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