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Mahgoub, Muhammad Ahmad

(Encyclopedia)Mahgoub, Muhammad Ahmad mo͞ohämˈmäd äkhmädˈ mäˈgo͞o [key], 1908–76, Sudanese political leader. After twice serving as Sudan's minister of foreign affairs (1956–58, 1964–65), he was ele...

eisteddfod

(Encyclopedia)eisteddfod īstĕᵺˈvəd, –vôd [key] [Welsh,=session], Welsh competitive festival. Contests traditionally are held in all the arts and crafts, with special emphasis on music and poetry. The Natio...

Pérez, Juan

(Encyclopedia)Pérez, Juan hwän pāˈrāth [key], d. 1774, Spanish colonial naval officer, explorer on the coast of the Pacific Northwest. In 1774 he commanded a fleet sent by the Spanish viceroy to investigate Ru...

Tsushima

(Encyclopedia)Tsushima tso͞oˈshēmä [key], two Japanese islands in Korea Strait. The islands are rocky, and fishing is the main occupation. Nearby, in May, 1905, occurred the major naval battle of the Russo-Japa...

Beer's law

(Encyclopedia)Beer's law [for August Beer], physical law stating that the quantity of light absorbed by a substance dissolved in a nonabsorbing solvent is directly proportional to the concentration of the substance...

Herschel

(Encyclopedia)Herschel hûrˈshəl [key], family of distinguished English astronomers. Sir William Herschel,Sir William Herschel, 1738–1822, born Friedrich Wilhelm Herschel, was a great pioneer in astronomy. Bor...

Pachelbel, Johann

(Encyclopedia)Pachelbel, Johann päkhĕlˈbĕl, päkhˈəlbĕlˌ [key], 1653–1706, German organist and composer, b. Nuremberg. He held a number of posts as an organist in German churches, returning to his birthpl...

Vis

(Encyclopedia)Vis vēs [key], Gr. Issa, Ital. Lissa, island, 35 sq mi (91 sq km), Croatia, off the Dalmatian coast in the Adriatic. A popular resort, its chief industries are fishing, citrus farming, and wine makin...

Bürgi, Joost

(Encyclopedia)Bürgi, Joost or Jost, 1552–1632, Swiss mathematician and instrument maker. As the official clockmaker (1579–92) to Duke Wilhelm IV of Hesse-Kassell, he developed the first clock with a minute han...

Haase, Hugo

(Encyclopedia)Haase, Hugo ho͞oˈgō häˈzə [key], 1863–1919, German Socialist leader. A Social Democratic member of the Reichstag, he opposed World War I, but initially followed his party's position in support...