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'''Einstein's radius''' is the radius of curvature of stationary (or less properly called "static") Einstein's universe model that was proposed by Einstein in 1917 and later given up after astronomers assumed that the universe might be expanding. Which might have been only an illusion as explained in [[Problems in Cosmology]] and then '''Einstein's radius''' would be about 13 billion light years. The number coming from division of speed of light by [[Hubble constant]].

'''Einstein's radius''' is the radius of curvature of stationary (or less properly called "static") Einstein's universe model that was proposed by Einstein in 1917 and later given up after consensus of astronomers assumed that the universe is expanding. In 1985 it turned out that expansion is only a relativistic illusion produced by coupling of time with space but [[relativists]] didn't accept that and started to suppress notion of illusion by not allowing publications of papers explaining this illusion

 

 

</ref>. [[Relativists]] insisted that it is not an illusion but a real expansion. Though no scientific theory of expansion could be constructed as it contradicted the conservation laws (conservation of energy and momentum) so the hypothesis of expansion became a true [[cargo cult science]] as described by [[Richard Feynman]] in his rant against [[relativists]].

 

The illusion of expansion is explained in [[Gravitation demystified]] and so '''Einstein's radius''' would be about 13 billion light years. The number coming from division of speed of light by [[Hubble constant]] that represent the [[intrinsic redshift]] in the universe that is result of Newtonian calculation of [[dynamical friction]] of photons in a stationary [[Einstein's universe]]

 

 

where <math>c</math> is speed of light in vacuum, <math>G</math> is Newtonian gravitational constant, and <math>\rho</math> is the density of space of universe.

 

 

[[Category:Cosmology]]

[[Category:Cosmology]]