this invention has been attributed to him
61History of radar — The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell s seminal work on electromagnetism.… …
62glassware — /glas wair , glahs /, n. articles of glass, esp. drinking glasses. [1705 15; GLASS + WARE1] * * * Introduction any decorative article made of glass, often designed for everyday use. From very early times glass has been used for various… …
63medicine, history of — Introduction the development of the prevention and treatment of disease from prehistoric and ancient times to the 20th century. Medicine and surgery before 1800 Primitive (primitive culture) medicine and folklore Unwritten history is not… …
64pre-Columbian civilizations — Introduction the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …
65Benjamin Franklin — Infobox Governor name=Benjamin Franklin width=180px height=220px caption=1777 Jean Baptiste Greuze portrait of Franklin. order=6th President of the Supreme Executive Council of Pennsylvania office= term start=October 18, 1785 term end=December 1 …
66C. S. Lewis — C.S. Lewis aged 50 Born Clive Staples Lewis 29 November 1898(1898 11 29) Belfast, Ireland Died …
67Roger Bacon — For the Nova Scotia premier, see Roger Stuart Bacon. Roger Bacon Order of Friars Minor Statue of Roger Bacon in the Oxford University Museum Born c …
68St. Bonaventure — St. Bonaventure † Catholic Encyclopedia ► St. Bonaventure Doctor of the Church, Cardinal Bishop of Albano, Minister General of the Friars Minor, born at Bagnorea in the vicinity of Viterbo in 1221; died at Lyons, 16 July, 1274.… …
69aesthetics — /es thet iks/ or, esp. Brit., /ees /, n. (used with a sing. v.) 1. the branch of philosophy dealing with such notions as the beautiful, the ugly, the sublime, the comic, etc., as applicable to the fine arts, with a view to establishing the… …
70motion picture — motion picture, adj. 1. a sequence of consecutive pictures of objects photographed in motion by a specially designed camera (motion picture camera) and thrown on a screen by a projector (motion picture projector) in such rapid succession as to… …
