Besides the radioactive elements, do the other elements on the Periodic Table of the Elements have half-lives?
Not at all. Just pointing out that the stable elements are called stable because they have halflifes longer than the supposed age of the universe, trillions of years in some cases. But the law of entropy tells us that even these must eventually break down.Originally posted by zoobyshoe
Rust, I guess, Fz+.
Lurch, I have never heard this.
Are you pulling legs?
"Thinking about it some more. If everything has a half-life, does everything end up decaying into hydrogen and then disintegrating into subatomic particles from there?"
What were the ingredients of the 'Big Bang' soup?
Yup, this figure is a moving target. Proton decay may never be observed.Originally posted by selfAdjoint
I don't think anyone has ever seen a proton decay. The 10^30 years figure (now pushed up to 6*10^32, I believe) is a lower limit. They got it by observing 10^30 protons for a year and none decayed.
As we get down to the simplest forms, wave/partical duality becomes a real issue. Theretically, entopy would not be satisfied with individual atoms or even sub-atomic particals. If the universe is indeed "open", and does not end, and if entropy does not cease for some other reason, all energy should break down and distribute untill there is nothing but a uniform background radiation. This is "heat death", and would be the end of entropy.Originally posted by alchemist
if what is said is true,that all elements have a half-life, then it means that they would continue to disintegrate over time and would there be a stage where they would become the simplest form of particles and therefore stop disintegrating???