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The same experimental data shows that time as measured by clocks in a gravitational field—proper time, to give the technical term—does not follow the rules of special relativity. In the language of spacetime geometry, it is not measured by the Minkowski metric. As in the Newtonian case, this is suggestive of a more general geometry.
Among other references to the book, a 2005 column of The Physics Teacher, included the work in a list of books "by and about Einstein that all physics teachers should have" and "should have immediate access to", [14] while a 2019 review of another work opened by stating: "Every teacher of General Relativity depends heavily on two texts: one ...
In special relativity, energy is closely connected to momentum. In special relativity, just as space and time are different aspects of a more comprehensive entity called spacetime, energy and momentum are merely different aspects of a unified, four-dimensional quantity that physicists call four-momentum. In consequence, if energy is a source of ...
:English translations: "Does the Inertia of a Body Depend Upon Its Energy Content?". Translation by George Barker Jeffery and Wilfrid Perrett in The Principle of Relativity, London: Methuen and Company, Ltd. (1923). :Used the newly formulated theory of special relativity to introduce the mass energy formula. One of the Annus Mirabilis papers.
Galilean invariance or Galilean relativity states that the laws of motion are the same in all inertial frames of reference. Galileo Galilei first described this principle in 1632 in his Dialogue Concerning the Two Chief World Systems using the example of a ship travelling at constant velocity, without rocking, on a smooth sea; any observer below the deck would not be able to tell whether the ...
Howard Stein [5] and Steven F. Savitt [6] note that in relativity the present is a local concept that cannot be extended to global hyperplanes. Furthermore, N. David Mermin [ 7 ] states: That no inherent meaning can be assigned to the simultaneity of distant events is the single most important lesson to be learned from relativity.
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The term "theory of relativity" was based on the expression "relative theory" (German: Relativtheorie) used in 1906 by Planck, who emphasized how the theory uses the principle of relativity. In the discussion section of the same paper, Alfred Bucherer used for the first time the expression "theory of relativity" ( German : Relativitätstheorie ).