Ratio of the density of a substance to that of a standard substance. For solids and liquids, the standard substance is usually water at 39.2°F (4.0°C), which has a density of 1.00 kg/liter. Gases are usually compared to dry air, which has a density of 1.29 g/liter at 32°F (0°C) and 1 atmosphere pressure. Because it is a ratio of two quantities that have the same dimensions (mass per unit volume), specific gravity has no dimension. For example, the specific gravity of liquid mercury is 13.6, because its actual density is 13.6 kg/liter, 13.6 times that of water.
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Ratio of the average mass of a chemical element's atoms to
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The relative-gains problem for international cooperation. (response to an article by Joseph Greico in this issue, p. 729-735)
Sep 01, 1993; Joseph Grieco incorrectly believes that the argument in my paper (Snidal 1991a) depends critically on special assumptions such as...
Relative priorities: relatives can be as integral to care home life as residents and staff but is the service offered to them all it could be? Through talking with staff at the Relatives and Residents Association and research fieldwork in three care homes, Hazel Heath sought better understanding.
Oct 01, 2003; moving into a care home A major transition, not only for older people but also for those close to them, is moving into a care...