In this case, the uranium is called the parent and the lead is called the daughter element. It is not affected by temperature, pressure, or other physical changes.As the number of parent atoms decreases, the number of daughter atoms increases.In our three article series on radiometric dating, we discuss in depth the assumptions that scientists must make.For example, it has to be assumed that all the daughter isotopes found in rocks today have been derived by radioactive decay of the parent isotopes.On the other hand, the court testimonies of forensic scientists are subjected to intense scrutiny, because they do not constitute proof.
On the other hand, because the Creator God of the Bible is who He says He is, as revealed in the Bible, we can make observations today and be absolutely confident that they will be the same tomorrow when we do them again. This process involves measuring the rate of decay of radioactive isotopes.Radioactive substances give off protons (positive particles) and neutrons (neutral particles) at a steady rate.What we observe and measure today exists in the present.We can repeat our observations tomorrow, but we can’t go back to last week to repeat them.If you did, you'd know about radiometric dating and how it is used as irrefutable proof that the Earth by itself is approximately four billion years old. Yes, we are well aware that there are different radioactive isotopes and that they can be used via the technique of radiometric dating to date materials from bone fragments to rocks. From the way you are using the word, it does not seem that you understand its meaning.In a courtroom, the “proof” that is sought by the judge and the jury is corroborated testimonies from eyewitnesses who were present at the scene of the crime and who saw the accused perpetrate the crime. They are also found in fossils and remains of organisms. Absolute-age dating is way for scientists to tell the exact age of a rock, fossil, or other object. Isotopes are atoms of the same element that have the same chemical properties. These isotopes are found in igneous and metamorphic rocks.It also has to be assumed that the rate of decay of the parent isotopes in the past has occurred constantly at the same rates measured today.There is absolutely no way any scientist can know whether these two assumptions are correct, because the evidence only exists today in the present, and we can’t go back to test the past millions of years and check that the rates of radioactive decay were the same then as they are now. This notion is based on a complete misunderstanding of the nature of evidence.