Ticktock Banneker's Clock by Shana Keller (English) Hardcover Book
27,57 €
Ticktock Banneker's Clock. Though he only briefly attended school and was largely self-taught, at a young age Benjamin displayed a keen aptitude for mathematics and science. Inspired by a pocket watch he had seen, at the age of 22 he built a strike clock based on his own drawings and using a pocket-knife.
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