Unstable nuclei decay. However, some nuclides decay faster than others. For example, radium and polonium, discovered by Marie and Pierre Curie, decay faster than uranium. That means they have shorter lifetimes, producing a greater rate of decay.
Radiometric Dating ( Read ) | Earth Science | CK Foundation
Geologist Ralph Harvey and historian Mott Greene explain the principles of radiometric dating and its application in determining the age of Earth. As the uranium in rocks decays, it emits subatomic particles and turns into lead at a constant rate. Measuring the uranium-to-lead ratios in the oldest rocks on Earth gave scientists an estimated age of the planet of 4. Segment from A Science Odyssey: "Origins. View in: QuickTime RealPlayer. Radiometric Dating: Geologists have calculated the age of Earth at 4. But for humans whose life span rarely reaches more than years, how can we be so sure of that ancient date?
Radiometric Dating: Definition, How Does it Work, Uses & Examples
Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they formed. The method compares the abundance of a naturally occurring radioactive isotope within the material and the abundance of its decay products, which form at a known constant rate of decay. Together with stratigraphic principles , radiometric dating methods are used in geochronology to establish the geological time scale.
Salvation Daily Devotion About. Evolution's Radiometric Dating Methods: Are they accurate? How tall was the candle to begin with? Has it always burned at the same rate?