| James, William | <person> U.S. Psychologist, 1842-1910. See: James-Lange theory. (05 Mar 2000) |
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| James-Lange theory | That bodily changes, such as tachycardia or sweating, precede rather than follow the conscious perception of an emotion and by themselves evoke the emotional feeling. (05 Mar 2000) |
| jamesonite | <chemical> A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron. Origin: From Prof. Jameson, of Edinburgh. Source: Websters Dictionary (01 Mar 1998) |
| Jamestown Canyon virus | A member of the California group of arboviruses (family Bunyaviridae) which has been associated with a mild febrile illness in humans in North America. (05 Mar 2000) |
| jamestown weed | <botany> The poisonous thorn apple or stramonium (Datura stramonium), a rank weed early noticed at Jamestown, Virginia. See Datura. This name is often corrupted into jimson, jimpson, and gympsum. Source: Websters Dictionary (01 Mar 1998) |
| Jamin Lebedeff system | <apparatus> Interference microscopy in which object and reference beams are split and later recombined by birefringent calcite plates, but pass through the same optical components (in contrast to the Mach Zehnder system). (18 Nov 1997) |