Книга: Badash «Radioactivity in America»

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• Environmental 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… …   Wikipedia

• Nuclear power — Atomic Power redirects here. For the film, see Atomic Power (film). This article is about the power source. For nation states that are nuclear powers, see List of states with nuclear weapons …   Wikipedia

• dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …   Universalium

• Chemistry: A Volatile History — is a 2010 BBC documentary on the history of chemistry presented by Jim Al Khalili. It was nominated for the 2010 British Academy Television Awards in the category Specialist Factual. Contents 1 Episode 1 – Discovering the Elements 1.1… …   Wikipedia

• nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …   Universalium

• Curie , Marie Skłodowska — (1867–1934) Polish–French chemist Marie Skłodowska s father was a physics teacher and her mother the principal of a girls school in the Polish capital Warsaw. She acquired from her father a positivism and an interest in science although to aid… …   Scientists