April 23 – History, Events, Births, Deaths, Holidays and Observances On This Day

April 23 in History 215 BC – A temple is built on the Capitoline Hill dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasimene. 599 – Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik’nal and sacking the city. 711 – Dagobert III succeeds his father King Childebert III as King of the Franks.…

Inventions and Inventors

Inventions and Inventors A Air Brake :  George Westinghouse, U.S.A. 1911. Air Conditioning :  Willis Carrier, U.S.A. 1911. Airplane :  engine-powered, Wilbur and Orville Wright, U.S.A., 1903. Airship : Henri Giffard, France, 1852; Ferdin von Zeppelin, Germany, 1900. Antibiotics :…