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Medical genetics, ophthalmology. Congenital cataracts are a lens opacity that is present at birth. Congenital cataracts occur in a broad range of severity. Some lens opacities do not progress and are visually insignificant, others can produce profound visual impairment. Congenital cataracts may be unilateral or bilateral.
Pneumonoultramicroscopicsilicovolcanoconiosis is the longest word in the English language. The word can be analysed as follows: This word was invented in the daily meeting from the National Puzzlers' League (N.P.L.) by its president Everett M. Smith. The word featured in the headline for an article published by the New York Herald ...
Stanley Price Weir (23 April 1866 – 14 November 1944) was a public servant and Australian Army officer. During World War I, he commanded the 10th Battalion of the Australian Imperial Force during the landing at Anzac Cove and the Gallipoli campaign against the Ottoman Turks, and during the battles of Pozières and Mouquet Farm in France.
v. t. e. The Richter scale [1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Francis Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it ...
Main article: Light-emitting diode physics. In a light-emitting diode, the recombination of electrons and electron holes in a semiconductor produces light (be it infrared, visible or UV), a process called " electroluminescence ". The wavelength of the light depends on the energy band gap of the semiconductors used.
Ludwig van Beethoven [n 1] (baptised 17 December 1770 – 26 March 1827) was a German composer and pianist. He is one of the most revered figures in the history of Western music; his works rank among the most performed of the classical music repertoire and span the transition from the Classical period to the Romantic era in classical music.
Kinbane Castle (dusk) Kinbane Castle ( Caisleán Ceinn Bán, White Head Castle, Kenbane/Kenbaan Castle) is located in County Antrim, Northern Ireland, on a headland between Ballycastle and Ballintoy. The name comes from the Irish for "white head", referring to the limestone of the promontory. [1] Nowadays, the castle is largely destroyed.
