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fire clay
(Encyclopedia) fire clay, clay that has a high degree of resistance to heat. By the best standards it should have a fusion point higher than 1,600℃. The term “fire clay” is commonly held to exclude…Greek fire
(Encyclopedia) Greek fire, a flammable composition believed to have consisted of sulfur, naphtha, and quicklime. Although known in antiquity, it was first employed on a large scale by the Byzantines…ceilometer
(Encyclopedia) ceilometerceilometersēlŏmˈĭtər [key], in aviation and meteorology, automatic instrument used to record ceiling, i.e., the altitude of the lowest cloud layer covering more than half of…Oort cloud
(Encyclopedia) Oort cloud: see comet.White Cloud
(Encyclopedia) White Cloud: see Waubeshiek.Fire Island
(Encyclopedia) Fire Island, barrier beach, 32 mi (52 km) long, off the south shore of Long Island, SE N.Y., separating Great South Bay from the Atlantic Ocean. Robert Moses State Park is at its west…Large Magellanic Cloud
(Encyclopedia) Large Magellanic Cloud: see Magellanic Clouds.Small Magellanic Cloud
(Encyclopedia) Small Magellanic Cloud: see Magellanic Clouds.fire-eaters
(Encyclopedia) fire-eaters, in U.S. history, term applied by Northerners to proslavery extremists in the South in the two decades before the Civil War. Edmund Ruffin, Robert B. Rhett, and William L.…fire escape
(Encyclopedia) fire escape, in architecture, device, either fixed or movable, to facilitate escape from a burning building. In the United States the term usually is applied to the common iron…Trending
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