Enter a wavelength of visible light (380nm - 808nm) to see what color it is 405nm.com Submitted by CoherentPhoton t3_yez813 on October 27, 2022 at 6:18 PM in InternetIsBeautiful 92 comments 1,363
WillBigly t1_iu1jgpl wrote on October 27, 2022 at 9:26 PM What do you mean you don't know what 800nm light looks like? Permalink 1
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