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It depends on what these invariant quantities are. It is not enough to specify that something is invariant, you also need to specify under which operation these quantities do not change (= are invariant).

In special relativity there is an operation called a Lorentz transformation which applies the effects of a speed increase, thus applying time dilatation and length contraction. A Lorentz invariant quantity is a quantity which remains the same under this transformation, i.e. it has the same value for every observer in an inertial frame.

Examples of such invariants are the lengths of four-vectors, the generalizations of the common 3-dimensional vectors such as those indicating place and momentum. For example the 3d-vector for location (x,y,z) is joined with another quantity for the time dimension into a 4-vector whose length is Lorentz invariant. There are more Lorentz invariant quantities, some of them quite complex.

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What happens to Newtons laws of motion invariant quantities in special relativity?

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What is the difference between relativity and special relativity, and how do they relate to each other?

Relativity is a theory that describes how objects and energy interact in the universe, while special relativity is a specific branch of relativity that deals with the behavior of objects moving at high speeds. Special relativity is a subset of the broader theory of relativity, focusing on the effects of motion on space and time. Both theories are interconnected, with special relativity providing a more detailed understanding of certain aspects of relativity.


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At least special theory of relativity was published 1905


When did Albert Einstein propose the theory of relativity?

Special Relativity 1905 General Relativity completed 1915 published 1916


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What is the difference between special relativity and general relativity?

Special relativity deals with the physics of objects moving at constant speeds, while general relativity includes the effects of gravity and acceleration on objects in motion.


What are the best books on special relativity for someone looking to deepen their understanding of the subject?

Some of the best books on special relativity for deepening understanding are "Spacetime and Geometry: An Introduction to General Relativity" by Sean Carroll, "Special Relativity and Classical Field Theory: The Theoretical Minimum" by Leonard Susskind and Art Friedman, and "Introduction to Special Relativity" by Wolfgang Rindler.


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Who is the develpoer of the theory of relativity?

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What is the difference between special and general relativity?

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What are the key differences between special relativity and general relativity?

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