Man Invents Glasses to Give Short People a Height Advantage
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Man Invents Glasses to Give Short People a Height Advantage
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Re: Man Invents Glasses to Give Short People a Height Advantage
#2It's a periscope.
Re: Man Invents Glasses to Give Short People a Height Advantage
#3https://en.wikipedia.org/wiki/Periscope#Early_examples gives
prior art:
”Johannes Gutenberg, known for his contribution to printing technology, marketed a kind of periscope in the 1430s to enable pilgrims to see over the heads of the crowd at the vigintennial religious festival[which?] at Aachen.”