laser microprobe analysis
21Scientific jargon — While studying nature, scientists often encounter or create new material or immaterial objects and concepts and are compelled to name them. Most of those names are known only to professionals. However, due to popularization of science, they… …
22x-ray — /eks ray /, n. Also, x ray, X ray. 1. Physics. a. Often, x rays. a form of electromagnetic radiation, similar to light but of shorter wavelength and capable of penetrating solids and of ionizing gases. b. such radiation having wavelengths in the… …
23Mars Polar Lander — Artist depiction of Mars Polar Lander on Mars. Operator NASA / JPL Major contractors Martin Marietta …
24Lunar water — Composite image of the Moon s south polar region, captured by NASA s Clementine probe over two lunar days. Permanently shadowed areas could harbour water ice. Lunar water is water that is present on the Moon. Liquid water cannot persist at the… …
25Uranium-lead dating — Uranium lead is one of the oldest and most refined radiometric dating schemes, with a routine age range of about 1 million years to over 4.5 billion years, and with routine precisions in the 0.1 1 percent range. [Parrish, Randall R.; Noble,… …
26Grenville Turner — (born 1 November 1936, Todmorden) is a research professor at the University of Manchester. He is one of the pioneers of cosmochemistry. Education * Todmorden Grammar School * St. John s College, Cambridge (MA) * Balliol College, OxfordIn 1962, he …
27Tephrochronology — is a geochronological technique that utilises discrete layers of tephra mdash;volcanic ash from a single eruption mdash;to create a chronological framework in which paleoenvironmental or archaeological records can be placed. Such an established… …
28Environmental radioactivity — is produced by radioactive materials in the human environment. While some radioisotopes, such as strontium 90 (90Sr) and technetium 99 (99Tc), are only found on Earth as a result of human activity, and some, like potassium 40 (40K), are only… …
29Behavior of nuclear fuel during a reactor accident — This page is devoted to a discussion of how uranium dioxide nuclear fuel behaves during both normal nuclear reactor operation and under reactor accident conditions such as overheating. Work in this area is often very expensive to conduct, and so… …
