Hi again Peepul,
Laws and constants - that the laws and constants of nature have remained unchanged since some given time in the past, or have changed only in ways that do not invalidate the theory of evolution or evidence that supports it, such as radiometric dating. Not necessarily from the very beginning, in the context of evolution, but at least from the formation of the solar system about 4.7 billion years ago.
...
My own interest is primarily in the fundamentals - the laws and constants, and particularly those which are relevant to the age of the earth and dating methods. ...
In addition to what Subbie has mentioned, I'd like to add this thread:
Are Uranium Halos the best evidence of (a) an old earth AND (b) constant physics?:
quote:
Where I am starting is from Dr Wiens:
Radiometric Dating
quote:
13. "Radiation halos" in rocks prove that the Earth was young.
This refers to tiny halos of crystal damage surrounding spots where radioactive elements are concentrated in certain rocks. Halos thought to be from polonium, a short-lived element produced from the decay of uranium, have been found in some rocks. ...
At any rate, halos from uranium inclusions are far more common. Because of uranium's long half-lives, these halos take at least several hundred million years to form. Because of this, most people agree that halos provide compelling evidence for a very old Earth.
(bold added for empHASis, part deleted not about uranium halos)
The thread goes on to discuss how any change in the constants would affect the energy of the particles and alter the way the halo forms, ergo there has been no change in these constants during the "several hundred million years" they take to form.
Uranium halos are a nail in the coffin on variable rates.
Enjoy.
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