What is the role of isotopes in radiometric dating Cam chats uk
To achieve stability, some ‘particles’ are ejected from the atoms, and these moving ‘particles’ constitute the radioactivity measured by Geiger counters and the like.The end result is stable atoms of the ‘daughter’ elements lead, argon, and strontium respectively.The radioactive decay of ‘parent’ isotopes of uranium, thorium, potassium, and rubidium to ‘daughter’ isotopes of lead, argon and strontium respectively is analogous to our hourglass ‘clock’, including these three assumptions.
However, once again this interpretation to overcome this problem of the invalidated closed-system assumption cannot be proved, but is merely assumed to be correct because it makes the radioactive ‘clock’ work.Thus the first step in the radioactive dating technique is to measure the amounts of the parent and daughter elements (isotopes) in a rock sample via chemical analyses.This is done in specially equipped laboratories with sophisticated instruments capable of very good precision and accuracy, so in general there is no quarrel with the resulting chemical analyses.Yet most people really don’t know much about these radioactive dating methods.So slick and convincing are the presentations of results, particularly in glossy media and museum propaganda, that no one even bothers to question how these dating methods work, what assumptions are involved, and how reliable they are. The answers are not only instructive, but demolish the evolutionary geologist’s case for a 4.5-billion-year old earth.
Now this ‘clock’ works because the initial conditions are known—that is, all the sand grains are in the top glass bowl and none are in the bottom one.