The first Iranian pilot, Ahmad Nakhjavan (2nd right), graduated from flight school in France in 1925. This paved the way for the beginnings of the Iranian air force @facethenation
This is not a dance. Atlanta Braves catcher Greg Olson goes head over heels after tagging Minnesota left fielder Dan Gladden out at home during Game 1 of the 1991 World Series @facethenation
The first successful vacuum cleaner was invented in 1901 by Hubert Cecil Booth, a British engineer.
Booth's machine took the form of a large, horse-drawn, petrol-driven unit, which was parked outside the building to be cleaned with long hoses being fed through the windows, and it took four to six people to operate it.
Of course, these early versions of vacuum cleaners were bulky, noisy, smelly and commercially unsuccessful.
@facethenation
Booth's machine took the form of a large, horse-drawn, petrol-driven unit, which was parked outside the building to be cleaned with long hoses being fed through the windows, and it took four to six people to operate it.
Of course, these early versions of vacuum cleaners were bulky, noisy, smelly and commercially unsuccessful.
@facethenation
Michael Faraday invented the first electric motor in 1821. One of the greatest scientists of the 19th century @facethenation
Doctors using X-ray machine to feed venous catheter into patient's heart, 1947 @facethenation
On March 18, 1965, Alexey Leonov 👨🚀 stepped outside the thin metal shell of Voskhod-2 🚀 to float in the harsh void of space @facethenation
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