Illustration of a hydropowered perpetual flute from "The Book of Knowledge of Ingenious Mechanical Devices" by Ismail al-Jazari in 1206 @facethenation
French submarine Gymnote with crew, 1902. The Gymnote was one of the world's first all-electric submarines and the first functional submarine equipped with torpedoes @facethenation
On Tuesday, March 13, 1888, the streets of New York City were nearly unrecognizable. "Great White Hurricane" 🌬❄️❄️❄️ blizzard @facethenation
👨🚀 Alan Bean during the Apollo 12 spacewalk on the moon's 🌖 surface, 1969 @facethenation
Somewhere along the Persian Corridor. US Army truck convoy carrying supplies for the USSR on the way through a mountain pass, 1943 @facethenation
Construction of Theodore Roosevelt Dam in 1909. It was the largest masonry dam in the world for its time with a height of 280 feet (84 m) and a length of 723 feet (216 m) @facethenation
Apollonius of Perga was a Greek geometer and astronomer known for his theories on the topic of conic sections.
The work of Apollonius of Perga has had such a great impact on the development of mathematics, that he is known as "The Great Geometer". In fact, in his book Conics he introduces terms, such as parabola, ellipse, and hyperbola that are still used today.
📕 The Conica of Apollonius of Perga were translated into Arabic in 1070. These two pages form the colophon of the manuscript. The Arabic translators were Hilāl ibn Abī Hilāl al-Ḥimṣī and Thābit ibn Qurrah.
@facethenation
The work of Apollonius of Perga has had such a great impact on the development of mathematics, that he is known as "The Great Geometer". In fact, in his book Conics he introduces terms, such as parabola, ellipse, and hyperbola that are still used today.
📕 The Conica of Apollonius of Perga were translated into Arabic in 1070. These two pages form the colophon of the manuscript. The Arabic translators were Hilāl ibn Abī Hilāl al-Ḥimṣī and Thābit ibn Qurrah.
@facethenation
This 1899 photo by diver and photography pioneer Louis Boutan. The first ever underwater photograph @facethenation
Shulman's Market at the corner of N & Union Streets in the Southwest Waterfront neighborhood of Washington, with a 1931 Chevrolet car parked in front @facethenation
🍪 The muffin delivery man, 1900s. Some of England’s first street food was sold by fellows like this, who had roam the streets, ringing a bell 🛎 and carrying their wares on their head @facethenation
William Harley and Walter Davidson, the founders of the Harley Davidson Motor Company, 1910 🏍 @facethenation
Persian cossack brigade in Tabriz. Russia invades northern Persia under the pretext of protecting her subjects and nation interests on March 26, 1909 @facethenation