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An odometer or odograph is an instrument used for measuring the distance traveled by a vehicle, such as a bicycle or car. ... Reconstruction of Hero's odometer, ...
Hero's aeolipile. A number of devices and inventions have been ascribed to Hero, including the following: The aeolipile (a version of which is known as "Hero's engine"), which was a rocket-like reaction engine and the first-recorded steam engine (although Vitruvius mentioned the aeolipile in De Architectura, presumably earlier than Hero). [13]
An illustration of Hero's aeolipile. An aeolipile, aeolipyle, or eolipile, from the Greek "Αἰόλου πύλη," lit. ' Aeolus gate ', also known as a Hero's (or Heron's) engine, is a simple, bladeless radial steam turbine which spins when the central water container is heated. Torque is produced by steam jets exiting the turbine.
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Hero of Alexandria first described the aeolipile in the 1st century AD and many sources give him the credit for its invention. Steam-powered device: Archimedes invented the first steam-powered device with the Steam cannon. [71] Stoa: In ancient Greek architecture, is a covered walkway or portico, commonly for public use. Early stoas were open ...
Other Hellenistic innovations include torsion catapults, pneumatic catapults, crossbows, rutways, organs, the keyboard mechanism, differential gears, showers, dry docks, diving bells, odometer and astrolabes. In architecture, Hellenistic engineers constructed monumental lighthouses such as the Pharos and devised central heating systems.
Charles Person, the youngest member of the original Freedom Riders who faced racial violence to challenge segregation in interstate travel, died Jan. 8 in Fayetteville, Georgia. He was 82. In 1961 ...
Nickelodeon is continuing its tradition of broadcasting an NFL playoff game in 2025. Here's how to watch the broadcast for the Texans-Chargers game.