By measuring the ratio of lead to uranium in a rock sample, its age can be determined. Using this technique, called radiometric dating, scientists are able to "see" back in time.

In 1902 Ernest Rutherford and Frederick Soddy discovered that radioactive elements, such as uranium and thorium, broke down into other elements in a predictable sequence or series. This amazing ...

This method is known as radiometric dating. Some commonly used dating methods are summarized in Table 1. The rate of decay for many radioactive isotopes has been measured and does not change over ...

Radiometric dating is a sophisticated scientific method used to accurately determine the age of Earth and geological materials. This technique relies on the decay of radioactive elements in rocks ...

Radiometric or gamma level/density instruments are most often used in applications where other measuring techniques fail due to extreme temperatures or pressures, toxic media, complex geometries of ...