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Pahlavi Iran, officially the Imperial State of Persia until 1935 and the Imperial State of Iran from 1935 to 1979, was the Iranian state under the rule of the Pahlavi dynasty. The Pahlavi dynasty was created in 1925 and lasted until 1979, when it was ousted as part of the Islamic Revolution , which ended Iran's continuous monarchy and ...
Letter frequency is the number of times letters of the alphabet appear on average in written language. Letter frequency analysis dates back to the Arab mathematician Al-Kindi ( c. 801 –873 AD), who formally developed the method to break ciphers. Letter frequency analysis gained importance in Europe with the development of movable type in 1450 ...
Sweating sickness, also known as the sweats, English sweating sickness, English sweat or sudor anglicus in Latin, was a mysterious and contagious disease that struck England and later continental Europe in a series of epidemics beginning in 1485. Other major outbreaks of the English sweating sickness occurred in 1508, 1517, and 1528, with the ...
USS Shenandoah (AD-44) was the fourth and final ship of the Yellowstone-class of destroyer tenders. AD-44 was the fifth ship to bear the name, USS Shenandoah as named for the Shenandoah Valley . She was commissioned in 1983, only three years after the decommissioning of the previous USS Shenandoah (AD-26) , also a destroyer tender.
Gemma Frisius. Gemma Frisius ( / ˈfrɪziəs /; born Jemme Reinerszoon; [1] December 9, 1508 – May 25, 1555) was a Dutch physician, mathematician, cartographer, philosopher, and instrument maker. He created important globes, improved the mathematical instruments of his day and applied mathematics in new ways to surveying and navigation.
The first major Muslim work of astronomy was Zij al-Sindhind by Persian mathematician al-Khwarizmi in 830. The work contains tables for the movements of the Sun, the moon and the five planets known at the time, and is significant as it introduced Ptolemaic concepts into Islamic sciences. This work also marks the turning point in Islamic astronomy.
February 4 – Conrad Celtes (born 1459), German and Latin-language poet May 13 – Martial d'Auvergne (born 1420 ), French poet Pietro Antonio Piatti (born 1442 ), Italian , Latin -language poet
