The discovery of radioactivity in 1896

См. также в других словарях:

• radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …   Universalium

• Age of the Earth — This article is about scientific estimates of the age of the Earth. For religious and other non scientific estimates, see Dating Creation. Earth as seen from Apollo 17 The age of the Earth is 4.54 billion years (4.54 × 109 years ± 1%) …   Wikipedia

• Geologic time scale — This clock representation shows some of the major units of geological time and definitive events of Earth history. The Hadean eon represents the time before fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga.[1] Other… …   Wikipedia

• Phosphorescence — As these transitions occur less often in certain materials, absorbed radiation may be re emitted at a lower intensity for up to several hours.The study of phosphorescent materials led to the discovery of radioactivity in 1896. Explanations of the …   Wikipedia

• Becquerel, Henri — ▪ French physicist Introduction in full  Antoine Henri Becquerel   born December 15, 1852, Paris, France died August 25, 1908, Le Croisic  French physicist (physical science) who discovered radioactivity through his investigations of uranium and… …   Universalium

• Marie Curie — Madame Curie redirects here. For the 1943 biographical film about her, see Madame Curie (film). This article is about the chemist and physicist. For the schools named after her, see École élémentaire Marie Curie and Marie Curie High School …   Wikipedia

• physical science — physical scientist. 1. any of the natural sciences dealing with inanimate matter or with energy, as physics, chemistry, and astronomy. 2. these sciences collectively. [1835 45] * * * Introduction       the systematic study of the inorganic world …   Universalium

• atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium

• Curie, Marie — orig. Maria Sklodowska born Nov. 7, 1867, Warsaw, Pol., Russian Empire died July 4, 1934, near Sallanches, France Polish born French physical chemist. She studied at the Sorbonne (from 1891). Seeking the presence of radioactivity, recently… …   Universalium

• Nuclear physics — For other uses, see Nuclear Physics (disambiguation). Nuclear physics Radioactive decay Nuclear fission Nuclear fusion …   Wikipedia

• 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