from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A soft, silvery-white ductile metal, liquid at room temperature, the most electropositive and alkaline of the elements, used in photoelectric cells and to catalyze hydrogenation of some organic compounds. Atomic number 55; atomic weight 132.905; melting point 28.5°C; boiling point 690°C; specific gravity 1.87; valence 1. See Table at element.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of caesium.
from the GNU version of the Collaborative International Dictionary of English
- n. the chemical element of atomic number 55. It is a univalent element, the most electropositive metal. Symbol Cs; atomic weight 132.905. IT has a melting point of 28.4° C.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
"It stands to reason that at some point the Ukrainian government would like to be able to use that land again, but the scientists have calculated that what they call cesium's" ecological half-life "- the time for half the cesium to disappear from the local environment - is between
Corporation and then NSF and used it to thoroughly develop a novel experimental approach for measuring atomic PV in cesium.
In the second phase, a drug called cesium fluoride, known to stimulate the enzyme adenylate cyclase, was added to the blood samples, and the activity of the enzyme was measured.
Even before the explosion on Saturday, officials said they had detected radioactive cesium, which is created when uranium fuel is split, an indication that some of the nuclear fuel in the reactor was already damaged.
Since 1967, the official definition of a second is 9,192,631,770 cycles of the radiation that gets an atom of the element called cesium to vibrate between two energy states.
And when the nuclear fission byproduct known as cesium 137 traveled faster underground than anticipated at another location, Zachara found that residual heat and high salt concentrations from the wastes unexpectedly affected how water and minerals reacted with the cesium.
Abandoned medical scanners, food processing devices and mining equipment containing radioactive metals such as cesium-137 and cobalt-60 are often picked up by scrap collectors and sold to recyclers, according to the International Atomic Energy Agency, the UN's nuclear arm.
The thyroid can be affected by ionizing radiation through the skin by gamma radiation, including X rays; by fission products, such as cesium; or by ingestion or inhalation of iodine-131 (131I), an isotope present in nuclear fission products.
Reactive gas-filled vapour cells can be used in frequency standard devices, especially as a cavity in atomic clocks, where the time is delivered during the hyperstructure transition from the metal alkali atoms such as cesium or rubidium.
They also offer evidence of atmospheric releases of dangerously long-lived radioactive particles such as cesium and strontium -- releases denied by the Kemeny Commission but indicated in the Thompsons 'own post-disaster monitoring and detailed in the report -- and show that there were pathways for the radiation to escape into the environment.