inventor: Quick Facts

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Photos

Thomas Alva Edison stands leaning against a workbench in his laboratory in 1906, surrounded by scientific equipment and glass bottles.

Illustration showing two types of human hand grips: a power grip holding a stick with the whole hand and a precision grip holding a small object between the thumb and fingertips.

An illustration of Archimedes' screw shows a helical screw inside a slanted tube, lifting water from a lower pool to a higher level when the handle at the top is turned.

Ctesibius of Alexandria

Heron of Alexandria's aeolipile.

Johannes Gutenberg, wearing a fur-trimmed robe, examines his first printed proof sheet with two assistants in a workshop beside an early printing press.

Lippershey, Hans

Torricelli, detail of a portrait by an unknown artist

Guericke, engraving by C. Galle, 1649, after a portrait by Anselmus von Hulle

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Topics

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