The mass of a body when at rest, as opposed to its increasing mass with increasing velocity.
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http://jot101.com/2015/05/a-z-of-science-fiction-words/
(from the article `radiation measurement`) ...of the absorber material, the photon may disappear and be replaced by the formation of an electron-positron pair. The minimum energy required to ... ...during the late 1970s because experiments conducted in the Soviet Union and the United States suggested, contrary to the prevailing belief i...
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http://www.britannica.com/eb/a-z/r/37
the mass of an object as measured in a reference frame where it is at rest.
Found on
http://www.chemistry-dictionary.com/definition/rest+mass.php
The mass of an object when at rest relative to an observer.
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http://www.daviddarling.info/encyclopedia/R/rest_mass.html
intrinsic mass of a body, excluding the increase of mass acquired by the body due to its motion, according to the theory of relativity
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=111-13-17
intrinsic mass of a particle, excluding the increase of mass acquired by the particle, due to its motion, according to the theory of relativity
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-14-10
the mass of a particle excluding additional mass acquired by the particle in motion according to the theory of relativity
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http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-04-16
The rest mass of a particle is the mass defined by the energy of the isolated (free) particle at rest, divided by the speed of light squared. When particle physicists use the word 'mass', they always mean the 'rest mass' of the object in question.
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http://www.encyclo.co.uk/visitor-contributions.php
[
n] - (physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body
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http://www.webdictionary.co.uk/definition.php?query=rest%20mass
The rest mass of a particle is the mass defined by the energy of the isolated (free) particle at rest, divided by the speed of light squared. When particle physicists use the word 'mass', they always mean the 'rest mass' of the object in question. See also: Mass, Rest Energy.
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https://www.encyclo.co.uk/local/20687
noun (physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the body
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https://www.encyclo.co.uk/local/20974
In physics, the mass of a body when its velocity is zero or considerably below that of light. According to the theory of relativity, at very high velocities, there is a relativistic effect that increases the mass of the particle
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https://www.encyclo.co.uk/local/21221
No exact match found.
