What is the difference between radioactive dating and radiometric dating
Many scientists, including Marie and Pierre Curie, Ernest Rutherford and George de Hevesy, have attempted to influence the rate of radioactive decay by radically changing the pressure, temperature, magnetic field, acceleration, or radiation environment of the source.No experiment to date has detected any change in rates of decay.After one half-life passes, half of the remaining nuclei will decay in the next half-life.Then, half of that amount in turn decays in the following half-life.National Institute of Standards and Technology (NIST)."Radiometric dating still reliable (again), research shows." Science Daily.
"There are always more unknowns in your measurements than you can think of," Lindstrom says.
Atoms of radioactive isotopes are unstable and decay over time by shooting off particles at a fixed rate, transmuting the material into a more stable substance.
For instance, half the mass of carbon-14, an unstable isotope of carbon, will decay into nitrogen-14 over a period of 5,730 years.
Half of what remains decays in the next half-life, and half of that in the next, and so on.
This is exponential decay, as seen in the graph of the number of nuclei present as a function of time. Radioactive carbon has the same chemistry as stable carbon, and so it mixes into the biosphere, where it is consumed and becomes part of every living organism.