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Radiometric dating. Radiometric dating, radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to ...
Yahoo! Games was a section of the Yahoo! website, launched on March 31, 1998, in which Yahoo! users could play games either with other users or by themselves. The majority of Yahoo! Games was closed down on March 31, 2014, and the balance was closed on February 9, 2016. [3] Yahoo! announced that "changes in supporting technologies and increased ...
Calipers. A vernier caliper clamping on an object. Caliper (s) or calliper (s) are an instrument used to measure the linear dimensions of an object or hole; namely, the length, width, thickness, diameter or depth of an object or hole. The word "caliper" comes from a corrupt form of caliber. [1][2][3]
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Compu-Math. Compu-Math was a series of mathematics tutorials developed and published by Edu-Ware Services in the 1980s. Each program in the Compu-Math series begins with a diagnostic Pre-Test, which presents learners with mathematics problems to determine their current skill level in the subject and then recommends the appropriate learning module.
Yahoo Sports AM is our daily newsletter that keeps you up to date on all things ... a 1.5-point underdog ahead of Saturday's home game vs. No. 2 Georgia. If that holds, it will be the first time ...
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...
Closure (mathematics) In mathematics, a subset of a given set is closed under an operation of the larger set if performing that operation on members of the subset always produces a member of that subset. For example, the natural numbers are closed under addition, but not under subtraction: 1 − 2 is not a natural number, although both 1 and 2 ...