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John Carmack

@ID_AA_Carmack

AGI at Keen Technologies, former CTO Oculus VR, Founder Id Software and Armadillo Aerospace

calendar_today07-08-2010 03:40:11

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John Carmack(@ID_AA_Carmack) 's Twitter Profile Photo
John Carmack
@ID_AA_Carmack

2 weeks ago

I was aware of Archemedis’ mirror based death ray from antiquity (and the MythBusters replication), but TIL that solar mirrors were commercially used in the 15th century for soldering. From Walter Isaacson’s Leonardo:

I was aware of Archemedis’ mirror based death ray from antiquity (and the @MythBusters replication), but TIL that solar mirrors were commercially used in the 15th century for soldering. From @WalterIsaacson’s Leonardo:
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