Uranium is enriched to make fuel for power reactors, but the same process also is used to make the explosive core of atom bombs.
Each type of atom and molecule has its own unique spectrum, according to the rules of quantum mechanics.
“The most frightening thing in the 1950s was the atom bomb,” film scholar Katherine Orrison explained.
Like the majority of atom Egoyan movies, Chloe is alternately exceptional and irritating.
Of course, an atom bomb is about to drop on American Idol: Simon Cowell will leave at the end of this season.
The atom when it is acting under the direction of a fixed law is a giant in strength.
Let us now look at the question as to what is meant by an atom more fully.
No writer concerning Hook can claim for him an atom of respect.
An atom of oxygen weighs 16 times as much as an atom of hydrogen.
It is these jets which occasionally sweep away an atom from the surface of the sphere.
late 15c., as a hypothetical indivisible body, the building block of the universe, from Latin atomus (especially in Lucretius) "indivisible particle," from Greek atomos "uncut, unhewn; indivisible," from a- "not" + tomos "a cutting," from temnein "to cut" (see tome). An ancient term of philosophical speculation (in Leucippus, Democritus), revived 1805 by British chemist John Dalton. In late classical and medieval use also a unit of time, 22,560 to the hour. Atom bomb is from 1945 as both a noun and a verb; cf. atomic.
atom at·om (āt'əm)
A unit of matter, the smallest unit of an element, having all the characteristics of that element and consisting of a dense, central, positively charged nucleus surrounded by a system of electrons. The entire structure has an approximate diameter of 10-8 centimeter and characteristically remains undivided in chemical reactions except for limited removal, transfer, or exchange of certain electrons.
This unit regarded as a source of nuclear energy.
A part or particle considered to be an irreducible constituent of a specified system.
The irreducible, indestructible material unit postulated by ancient atomism.
An extremely small part, quantity, or amount.
The smallest unit of an element, consisting of at least one proton and (for all elements except hydrogen) one or more neutrons in a dense central nucleus, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons. Atoms remain intact in chemical reactions except for the removal, transfer, or exchange of certain electrons. Compare compound. See also ion, isotope, orbital.