In 1912, Vesto Slipher discovered that light from remote galaxies was redshifted, which was later interpreted as galaxies receding from the Earth. In 1922, Alexander Friedmann used Einstein field equations to provide theoretical evidence that the universe is expanding. In 1927, Georges Lemaître independently reached a similar conclusion to Friedmann on a theoretical basis, and also presented the first observational evidence for a linear relationship between distance to galaxies and their recessional velocity. — Wikipedia
The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842. — Wikipedia
In 1905 Albert Einstein postulated from the outset that the speed of light in vacuum, measured by a non-accelerating observer, is independent of the motion of the source or observer. Using this and the principle of relativity as a basis he derived the special theory of relativity, in which the speed of light in vacuum c featured as a fundamental constant, also appearing in contexts unrelated to light. — Wikipedia
Where cars on the highway are concerned, the earth is taken as fixed, and the speeding ticket is deserved. [...]
Along with the recognition that there is no fixed distinction between fact and convention must go the recognition that nevertheless there is almost always some distinction or other between fact and convention - a transient distinction drawn by the stance adopted at the time. — Goodman, Inertia and Invention
Hi Fool. I'm not going to get into the physics so much, more the history. But one thing to mentally separate is a particular cosmological model from the theory that generates it.
[1]General relativity itself is consistent with a static universe, a collapsing universe, an expanding universe, whatever. The particular cosmological model Einstein was responsible for was a static universe. Far from twisting and bending to make empirical evidence fit theory, [2] Einstein referred to the (empirically, but wrongly, derived) value for the cosmological constant he used as his "biggest blunder".
[3]GR itself was unmolested by the expanding universe. It was just that particular model that had to be thrown out. — Kenosha Kid
[1] Nope
[2] No offense but I'll take Einstein over yourself as an authority on relativity :D
[3] My previous post treats this — Kenosha Kid
You're not using reason. — Kenosha Kid
You've presented a historical inaccuracy. — Kenosha Kid
I'll just add this to the (very long) list of Mad Fool threads derailed by his own insecurities. Like I said, the historical picture you painted wasn't true. I don't really care if this has any impact on you, I'm just a stickler for facts. If you're not bothered by facts, carry on as you were. It's more for the benefit of people who might read the OP and think it was true. — Kenosha Kid
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