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Lawson criterion
Lawson criterion
noun Physics.
(in a hypothetical nuclear fusion reactor) the requirement that in order for the energy produced by fusion to exceed the energy expended in causing the fusion, the product of the density of the fuel and the time during which it is confined at that density (Lawson product) must be greater than a certain number that depends on the kind of fuel used.
Origin:
after John David Lawson (born 1923), English physicist, who formulated it in 1957
after John David Lawson (born 1923), English physicist, who formulated it in 1957
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Lawson criterion
is always a great word to know.
So is cohesive. Does it mean:
| of or pertaining to the molecular force within a body or substance acting to unite its parts |
| the process in which energy is emitted as particles or waves, transmitted through an intervening medium or space, and absorbed by another body |
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