| 单词 |
Leidenfrost |
| 释义 |
Leidenfrost, n. Physics.|ˈlaɪdənfrɒst|
[The name of J. G. Leidenfrost (1715–94), German physicist.]
Used attrib. and in the possessive with reference to a phenomenon observed by Leidenfrost, in which liquid, when placed in contact with a surface whose temperature exceeds some critical value (the Leidenfrost point), forms a layer of vapour which insulates it from the surface.
1863E. Atkinson tr. Ganot's Elem. Treat. Physics vi. 258 Leidenfrost's phenomena... When liquids are thrown upon incandescent metallic surfaces they present remarkable phenomena, which were first observed by Leidenfrost a century ago. 1878Encycl. Brit. VIII. 728/2 This condition of the liquid is called the spheroidal state, and is often referred to as Leidenfrost's phenomenon. 1977Sci. Amer. Aug. 126/3 The temperature at which the drops last longest is the Leidenfrost point. 1981Daily Tel. 3 June 16 The phenomenon which aids fire-walkers is called the Leidenfrost effect. 1986Nature 13 Mar. 119/3 The Leidenfrost effect created by an insulating layer of water or sweat may also reduce energy transfer to the surface of the body. |
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