Cool gallery of magazine covers of a science mag published between 1913 and 1920. One of them features the “death star” from Star Wars. Neat sci-fi images from really early on.
When we were kids, we had a homemade merry-go-round build by my grandfather. It wasn’t run by propeller, it was people-powered by the kids sitting on it. I’ve sketched out the plans for it for my co-workers, but can’t quite remember how the gear stuff wor
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