Difference between revisions of "Hubble time dilation"
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The '''Hubble time dilation''' is an effect of accumulation of time dilation with distance from observer so for small distances it looks roughly propotional to the distance. The exact effect is <math>d\tau/dt=exp(-r/R_s)</math>, where <math>\tau</math> is proper time at point in deep space, <math>t</math> is coordinate time of the point, <math>r</math> is distance to this point from observer, and <math>R_s</math> is radius of curvature of space (called by cosmologists ''"Einstein's radius"''). | The '''Hubble time dilation''' is an effect of accumulation of time dilation with distance from observer so for small distances it looks roughly propotional to the distance. The exact effect is <math>d\tau/dt=exp(-r/R_s)</math>, where <math>\tau</math> is proper time at point in deep space, <math>t</math> is coordinate time of the point, <math>r</math> is distance to this point from observer, and <math>R_s</math> is radius of curvature of space (called by cosmologists ''"Einstein's radius"''). | ||
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| + | The above equation implies that the ''"Hubble constant"'' of our universe equals <math>H_o=c/R_s</math>, where <math>c</math> is speed of light in vacuum and <math>R_s</math> is radius of curvature of space (for our universe, about 13 billion light years). When this ''"Hubble constant"'', being in reality an exponential function is split into Taylor series it simmulates an accelerating expansion of space as discovered in 1998 and then took for action of ''"dark energy"'' since news about ''"[[Einsteinian gravitation]]"'' were not published at least since 1985 for alleged little interest to the public. | ||
Revision as of 17:41, August 7, 2011
The Hubble time dilation is an effect of accumulation of time dilation with distance from observer so for small distances it looks roughly propotional to the distance. The exact effect is <math>d\tau/dt=exp(-r/R_s)</math>, where <math>\tau</math> is proper time at point in deep space, <math>t</math> is coordinate time of the point, <math>r</math> is distance to this point from observer, and <math>R_s</math> is radius of curvature of space (called by cosmologists "Einstein's radius").
The above equation implies that the "Hubble constant" of our universe equals <math>H_o=c/R_s</math>, where <math>c</math> is speed of light in vacuum and <math>R_s</math> is radius of curvature of space (for our universe, about 13 billion light years). When this "Hubble constant", being in reality an exponential function is split into Taylor series it simmulates an accelerating expansion of space as discovered in 1998 and then took for action of "dark energy" since news about "Einsteinian gravitation" were not published at least since 1985 for alleged little interest to the public.