Radiometric dating dictionary
On the other hand, the concentration of carbon-14 falls off so steeply that the age of relatively young remains can be determined precisely to within a few decades.If a material that selectively rejects the daughter nuclide is heated, any daughter nuclides that have been accumulated over time will be lost through diffusion, setting the isotopic "clock" to zero.The possible confounding effects of contamination of parent and daughter isotopes have to be considered, as do the effects of any loss or gain of such isotopes since the sample was created.It is therefore essential to have as much information as possible about the material being dated and to check for possible signs of alteration.
These temperatures are experimentally determined in the lab by artificially resetting sample minerals using a high-temperature furnace.All ordinary matter is made up of combinations of chemical elements, each with its own atomic number, indicating the number of protons in the atomic nucleus.Additionally, elements may exist in different isotopes, with each isotope of an element differing in the number of neutrons in the nucleus. Found 60 sentences matching phrase "radiometric dating". Translation memories are created by human, but computer aligned, which might cause mistakes. , photometric, and quantum systems), widespread confusion persists among scientists, engineers, and commercial growers regarding the correct quantification and reporting of radiation measurements for plant-production applications.20, 2000, a 2,872,700 cost-plus-award-fee contract to provide for Phase II algorithm and design development, investigation and analysis, and construction of three flight production units in support of the Visible/Infrared Imagery and links in the image chain from the sensor to the ground to compute target-specific values such as reflectance and temperature; and covers the links in the chain associated with monochrome, multispectral, spectroscopic, and model- based image processing.