In this regard, pro-evolution scientists are very selective about which dates they accept and which ones they reject: such as any date that is contrary to the Geological Time Chart -- to which all radiometric dates must fall in line with.
In this regard it should also be pointed out that for the theory of life from non-life, and/or from amoeba to jellyfish, to man to have any chance at all of being true, then the earth must be very old. can be summarized as follows: In other words, something in the past caused a significant amount of helium to build up inside these zircons (such as from a rapid decay episode of uranium), yet, in spite of the fact that helium has been observed to leak out readily from these zircons, it has not done so: simply because it hasn't had enough time to do so -- suggesting that the zircons themselves are only a few thousand years old."There is evidence to show ...
Phrased simply, radioactive dating is the method that uses measurements relating to the radioactivity of the atoms in a fossil or an artifact. What "decay" means is that the atoms in the object or body become unstable, and, over time, begin to "decompose" by giving off radiation in the forms of subatomic particles (such as electrons and protons).
There are different types of radiation: specifically, gamma, alpha and beta radiation. This process of radioactive decay eventually leads to the atoms becoming a different element and achieving stability.
The term used to define the amount of time it takes for half of the radioactive atoms, such as C-14, in a body or object to decay fully is known as a "half-life." The half-life of C-14 is approximately 5 730 years.
This means that, after 5 730 years, roughly half of the radioactive C-14 atoms in a decomposing organic body will have decayed into nitrogen-14 atoms. That is, after two half-lives, 100% of the C-14 atoms will not have decayed into N-14 atoms. To put it simply, if one were to draw the decay rate of C-14 on a line chart, it would not be a straight, diagonal line. Scientists can use decay rates to, very roughly, determine the age of a fossil or artifact.
There are at least 67 different uniformitarian (the present is the key to the past) methods of dating the earth other than long-age radiometric dating: each of which yield ages of less than 500 million years.
Yet all these other science-based methods that point to a much younger age than 4.5 billion years for earth's age are ignored or rejected by evolution-believing people with degrees from college who apparently think that nobody (of importance) made them. Yet when asked why they reject all but the oldest science-based dating methods, the answer often given is that (they think) long-age radiometric dating is more reliable and that science settled the matter of the earth's age many years ago.
Two of the most well-known and most frequently used include radioactive dating and relative dating. Organic bodies, such as you and me, as well as inanimate objects, such as stone tablets or rocks.
His result was in close agreement with his estimate of the age of the earth.
The solar estimate was based on the idea that the energy supply for the solar radioactive flux is gravitational contraction.
In palaeontology and archaeology, it becomes necessary to determine the age of an artifact or fossil when it is uncovered.
This, of course, is so that it can be properly catalogued, and, if valid, can be related to or associated with other objects from the same era. Fossils and artifacts don't come with labels attached that clearly state their age.