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History 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.… … Wikipedia
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Dharma Initiative — Logo of the Dharma Initiative The Dharma Initiative, also written DHARMA (Department of Heuristics and Research on Material Applications[1]), was a fictional research project featured in the television series Lost. It was introduced in the second … Wikipedia
Arctic Regions — ▪ 2009 The Arctic regions may be defined in physical terms (astronomical [north of the Arctic Circle, latitude 66° 30′ N], climatic [above the 10 °C (50 °F) July isotherm], or vegetational [above the northern limit of the tree line]) or in human… … Universalium

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