Ancient Greece:Short vid illustrating of how the first known automatic door worked. By Heron of Alexandria. pic.twitter.com/oUxlncjp2w— Nrken19 (@nrken19) April 15, 2023
Ancient Greece:Short vid illustrating of how the first known automatic door worked. By Heron of Alexandria. pic.twitter.com/oUxlncjp2w
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