power direction relay
91Saudi Arabia — a kingdom in N and central Arabia, including Hejaz, Nejd, and dependencies. 20,087,965; ab. 600,000 sq. mi. (1,554,000 sq. km). Cap.: Riyadh. Cf. Mecca. * * * Saudi Arabia Introduction Saudi Arabia Background: In 1902 Abd al Aziz Ibn SAUD… …
92renal system — ▪ anatomy Introduction in humans (human body), organ system that includes the kidneys, where urine is produced, and the ureters, bladder, and urethra for the passage, storage, and voiding of urine. In many respects the human excretory, or… …
93Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
94Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …
95Dragon boat — This article is about Dragon boats and racing. For the festivals and holidays associated with dragon boats, see Duanwu Festival. Dragon boat Traditional Chinese 龍舟 Simplified Chinese 龙舟 …
96List of Edison patents — Below is a list of Edison patents. Thomas Edison was an inventor who, it is said, accumulated 1500 plus patents worldwide for his inventions. Nearly 1100 of Edison s patents were in the United States, but other patents were approved in countries… …
97Network protector — A network protector (also reverse power relay) is a type of electric protective device used in electricity distribution systems. The function of the network protector is to automatically connect and disconnect its associated power transformer… …
98jordan — /jawr dn/, n. Brit. Dial. See chamber pot. [1350 1400; ME jurdan urinal, perh. after JORDAN, the river, by coarse jesting] * * * Jordan Introduction Jordan Background: For most of its history since independence from British administration in 1946 …
99Jordan — Jordanian /jawr day nee euhn/, n., adj. /jawr dn/; for 3 also Fr. /zhawrdd dahonn /, n. 1. David Starr /stahr/, 1851 1931, U.S. biologist and educator. 2. June, born 1936, U.S. poet, novelist, and essayist. 3. Marie Ennemond Camille /mann rddee… …
100photoreception — 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 …
