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Cleopatra hieroglyphic carving the Ancient Egyptian queen Cleopatra. Wall of the Temple of Horus at Edfu, Egypt.

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Estimated Battle Casualties During the Normandy Invasion and Campaign to Liberate Paris (June–August 1944)

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Portion of the Aleppo Codex, a manuscript of the Hebrew Bible written in the Hebrew language in the 10th century CE; in the Shrine of the Book, Israel Museum, Jerusalem.

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wind pump

Learn about this topic in these articles:

windmill development

In energy conversion: Windmills
The first wind pump was introduced in the United States by David Hallay in 1854. After another American, Stewart Perry, began constructing wind pumps made of steel and equipped with metal vanes in 1883, this new and simple device spread around the world.
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