Comments about "Special relativity" in Wikipedia

This document contains comments about the article General relativity in Wikipedia
In the last paragraph I explain my own opinion.




The article starts with the following sentence.
General relativity has been described as the most beautiful of all existing physical theories.
The word beautiful is a misnomer.

1. History

2 From classical mechanics to general relativity

2.1 Geometry of Newtonian gravity

2.2 Relativistic generalization

2.3 Einstein's equations

2.4 Alternatives to general relativity

3. Definition and basic applications

3.1 Definition and basic properties

3.2 Model-building

4. Consequences of Einstein's theory

4.1 Gravitational time dilation and frequency shift

Assuming that the equivalence principle holds, gravity influences the passage of time.
This defines a clear definition of what means time. What gravity influences is the ticking rate of clocks.
Light sent down into a gravity well is blueshifted, whereas light sent in the opposite direction (i.e., climbing out of the gravity well) is redshifted; collectively, these two effects are known as the gravitational frequency shift.
What is even more important IF the speed of the photons is effected
More generally, processes close to a massive body run more slowly when compared with processes taking place farther away; this effect is known as gravitational time dilation.
However this raises a problem with the issue: IF the laws of nature in all reference frames the same are?. They are not.
It is even more stronger: What happens with the speed of light in a gravitational speed.

4.2 Light deflection and gravitational time delay

4.3 Gravitational waves

4.4 Orbital effects and the relativity of direction

5 Astrophysical applications

5.1 Gravitational lensing

5.2 Gravitational wave astronomy

5.3 Black holes and other compact objects

5.4 Cosmology

5.5 Time travel

6 Advanced concepts

6.1 Causal structure and global geometry

6.2 Horizons

6.3 Singularities

6.4 Evolution equations

6.5 Global and quasi-local quantities

7 Relationship with quantum theory

7.1 Quantum field theory in curved spacetime

7.2 Quantum gravity

8 Current status

9. See also

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Created: 4 November 2017

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