Atomic structure
the structure of an atom, theoretically consisting of a positively charged nucleus surrounded and neutralized by negatively charged electrons revolving in orbits at varying distances from the nucleus, the constitution of the nucleus and the arrangement of the electrons differing with various chemical elements.
Historical Examples
We know comparatively little about atomic structure in relation to nervous organism.
Second Sight Sepharial
The lack of opportunity to watch the stars that might teach them something would delay their knowledge of atomic structure.
Islands of Space John W Campbell
Deeply engrossed, I watched the graph which recorded the characteristic waves of atomic structure.
Autobiography of a YOGI Paramhansa Yogananda
“Well, you know what happens when a photon comes in contact with the atomic structure of matter,” Kato said.
The Mercenaries Henry Beam Piper
His own atomic structure mingled with that of the alien thing and yet, for a moment, he retained his Earthly form.
Wanderer of Infinity Harl Vincent
The shrinkage may be all in the crystalline lattice: the atomic structure may be unchanged.
The Mercenaries Henry Beam Piper
noun
the concept of an atom as a central positively charged nucleus consisting of protons and neutrons surrounded by a number of electrons. The number of electrons is equal to the number of protons: the whole entity is thus electrically neutral
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- Atomic theory
Physics, Chemistry. any of several theories describing the structure, behavior, and other properties of the atom and its component parts. Philosophy, (def 1). Historical Examples Out of the facts of chemistry the constructive imagination of Dalton formed the atomic theory. Fragments of science, V. 1-2 John Tyndall The atomic theory may be advantageously resorted to, […]
- Atomic time
noun time as measured by an atomic clock; International Atomic Time Examples Our clocks set with atomic time change themselves for daylight savings time. Word Origin 1937
- Atomic unit of length
. (in the Bohr atom) the radius of the electron orbit having the lowest energy.
- Atomic veteran
a veteran of the armed forces who was exposed to radioactivity during the testing or use of nuclear (atomic) weapons in World War II or subsequent wars.
- Atomic volume
the atomic weight of an element divided by its density. Abbreviation: at. vol. Historical Examples The equivalent and the density being known, we may calculate the atomic volume. Scientific American Supplement, No. 365, December 30, 1882 Various noun the atomic weight (relative atomic mass) of an element divided by its density