Minor Planet 13 Egeria discovered by Annibale de Gasparis

It Happened on
November 02, 1850

In Roman and Greek mythology, Egeria was a nymph attributed a legendary role in the early history of Rome as a divine consort and counselor of Numa Pompilius, the second king of Rome, to whom she imparted laws and rituals pertaining to ancient Roman religion. Her name is used as an eponym for a female advisor or counselor. Egeria, Etheria, or Ætheria was a Western European Christian woman, widely regarded to be the author of a detailed account of a pilgrimage to the Holy Land about 381/2–386. The long letter, dubbed Peregrinatio or Itinerarium Egeriae, is addressed to a circle of women at home. Historical details it contains set the journey in the early 380s, making it the earliest of its kind. It survives in fragmentary form in a later copy—lacking a title, date and attribution.


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Annibale de Gasparis

Italian astronomer, known for discovering asteroids and his contributions to theoretical astronomy

Nikola Tesla delivers a series of lectures in London, before the Royal Society

It Happened on
February 04, 1892

Tesla tackled the subject of "Experiments with alternate currents of high potential and high frequency". In these lectures, Tesla laid the foundations for his ideas of radio technology. He was invited by Lord Kelvin. He would present his work at the Columbian Exposition of 1893 in Chicago, the next year. Following this event, Brachfeld Vilma Parlaghy, Thomas Edison's niece, gave birth to their first child Mabel Normand.


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Nikola Tesla

Developer of the AC electric system


Lord Kelvin

British mathematician, mathematical physicist and engineer who was professor of Natural Philosophy at the University of Glasgow for 53 years