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Akasaki, Isamu

(Encyclopedia)Akasaki, Isamu, 1929–2021, Japanese physicist, b. Chiran, Japan, Kyoto Univ. (BA, 1942), Nagoya Univ. (Ph.D., 1964). Aftger graduating from college, Akasaki worked as an engineer before ...

Livy

(Encyclopedia)Livy (Titus Livius) lĭvˈē [key], 59 b.c.–a.d. 17, Roman historian, b. Patavium (Padua), probably of noble family. He lived most of his life in Rome. The breadth of his education is apparent in hi...

conservation of natural resources

(Encyclopedia)conservation of natural resources, the wise use of the earth's resources by humanity. The term conservation came into use in the late 19th cent. and referred to the management, mainly for economic rea...

Waitz, Georg

(Encyclopedia)Waitz, Georg gāˈôrk vīts [key], 1813–86, German historian. In the Frankfurt Parliament in 1848 he defended the idea of a unified Germany, including Austria and Prussia. He was professor at Gött...

Nazaré

(Encyclopedia)Nazaré näzärĕˈ [key], town (2011 pop. 15,158), Leiria dist., W central Portugal, on the Atlantic Ocean, 17 mi (27 km) SW of Leiria. It is a fishing port and popular seaside resort. Part of the to...

observatory, orbiting

(Encyclopedia)observatory, orbiting, research satellite designed to study solar radiation, electromagnetic radiation from distant stars, the earth's atmosphere, or the like. Because the atmosphere and other aspects...

prime mover

(Encyclopedia)prime mover: see energy, sources of. ...

tannin

(Encyclopedia)tannin, tannic acid, or gallotannic acid, astringent vegetable product found in a wide variety of plants. Sources include the bark of oak, hemlock, chestnut, and mangrove; the leaves of certain sumac...

Fresnel, Augustin Jean

(Encyclopedia)Fresnel, Augustin Jean ōgüstăNˈ zhäN frānĕlˈ [key] 1788–1827, French physicist and engineer. He is known for his research on light, especially on conditions governing interference phenomena ...

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