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Q: 445nm not germicid light

perguntado por BG465463421 sobre 2020-06-15 04:50:23

iburian 445 nm is not even UV :D 445 nm is blue or violet used in lasers for engraving or in Blueray, but absolutelly not Ultra-Violet :DDD

2020-06-22 05:30:15 Útil (21)
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