Submitted by SurprisedPotato t3_10utol4 in askscience
NursingStudent009 t1_j7gyvxq wrote
Reply to comment by ellipsis31 in Why are green and red laser pointers so cheap and available, but yellow ones not so much? by SurprisedPotato
I read the word 'diodes' wrong the first time I read it. I was utterly confused
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