secondary triangulation
31Radio navigation — or radionavigation is the application of radio frequencies to determining a position on the Earth. Like radiolocation, it is a type of radiodetermination.RDF / ADF / NDBThe first system of radio navigation was the Radio Direction Finder, or RDF.… …
32Donald Davidson (philosopher) — Donald Herbert Davidson Portrait of Donald Davidson by the photographer Steve Pyke in 1990. Full name Donald Herbert Davidson Born 6 March 1917(1917 03 06) Springfield, Massachusetts …
33Encyclopedia of the Brethren of Purity — The Encyclopedia of the Brethren of Purity (Arabic: رسائل أخوان الصفا و خلان الوفا Rasa il ikhwan as safa wa khillan al wafa; also variously known as the Epistles of the Brethren of Sincerity , Epistles of the Brethren of Purity and Epistles of… …
34Tactics of terrorism — Terrorist groups use various tactics to maximize fear and publicity. Terrorist organizations usually methodically plan attacks in advance, and may train participants, plant undercover agents, and raise money from supporters or through organized… …
35earthquake — /errth kwayk /, n. 1. a series of vibrations induced in the earth s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. 2. something that is severely disruptive; upheaval. [1300 50; ME erthequake …
36photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …
37Alhazen — For the Moon crater, see Alhazen (crater). For the asteroid, see 59239 Alhazen. Alhazen Alhazen (Ibn al Haytham) …
38Заблоки, Бенджамин — Benjamin Zablocki Дата рождения: 19 января 1941(1941 01 19) (71 год) Место рождения: Нью Йорк Научная сфера: социология религии, социальная психология Место работы …
39Battlecruiser — Battlecruisers were large warships in the first half of the 20th century that were first introduced by the British Royal Navy. The battlecruiser was developed as the successor to the armoured cruisers, but their evolution was more closely linked… …
40Conservatism — This article is about conservatism as a political and social philosophy. For other uses, see Conservatism (disambiguation). Part of a series on …
