Redout@lemmy.world to Lemmy Shitpost@lemmy.world · 2 years agoGet wokelemmy.worldimagemessage-square43fedilinkarrow-up1959arrow-down114
arrow-up1945arrow-down1imageGet wokelemmy.worldRedout@lemmy.world to Lemmy Shitpost@lemmy.world · 2 years agomessage-square43fedilink
minus-squarePons_Aelius@kbin.sociallinkfedilinkarrow-up37·edit-22 years agoYep. IIRC: An early (pre-telescope) astronomer did for tens of minutes at a time to document sun spots, but it took weeks for his sight to return and it was likely permanently damaged because of it.
minus-squarep1mrx@sh.itjust.workslinkfedilinkarrow-up4·2 years agoHe only really needed to invent basic office supplies: https://www.timeanddate.com/eclipse/box-pinhole-projector.html
Yep.
IIRC: An early (pre-telescope) astronomer did for tens of minutes at a time to document sun spots, but it took weeks for his sight to return and it was likely permanently damaged because of it.
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He only really needed to invent basic office supplies:
https://www.timeanddate.com/eclipse/box-pinhole-projector.html