• WordNet 3.6
    • n argon a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
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Webster's Revised Unabridged Dictionary
  • Interesting fact: The air we breathe is 78% nitrogen, 21.5% oxygen, .5% argon and other gases.
    • n Argon (Chem) A colorless, odorless gas occurring in the air (of which it constitutes 0.93 per cent by volume), in volcanic gases, etc.; -- so named on account of its inertness by Rayleigh and Ramsay, who prepared and examined it in 1894-95. Symbol, A; at. wt., 39.9. Argon is condensible to a colorless liquid boiling at -186.1° C. and to a solid melting at -189.6° C. It has a characteristic spectrum. No compounds of it are known, but there is physical evidence that its molecule is monatomic. Weight of one liter at 0° C. and 760 mm., 1.7828 g.
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Century Dictionary and Cyclopedia
  • Interesting fact: The air we breathe is comprised of 78% nitrogen, 21.5% oxygen and 0.5% argon.
    • n argon A name given by Lord Rayleigh and Professor William Ramsay to a new constituent of the atmosphere discovered by them in 1894. It is an inodorous gas, singularly inert chemically.
    • n argon A gaseous element having, in the pure state as a gas, a density of 19.96 (H=1) and an atomic weight of 39.6. It exists in the atmosphere, and is also obtained from the gases yielded by the water of some springs, and, with helium (which see), from certain minerals and from meteoric iron. It was first recognized in 1895 by Lord Rayleigh and Professor W. Ramsay, who separated it from the nitrogen with which it had till then been confounded largely because of its chemical inertness, it being more indifferent to reagents than even that element. It yields two characteristic spectra, marked respectively by certain prominent red and blue lines. This element, the first of five previously unknown gases existing in the atmosphere, exhibits the same chemical inertness or incapacity for combination as the others, with which when first examined it was more or less mixed. It can now be separated from them by reduction to the liquid state and fractional distillation of the mixture. When liquefied it boils under normal pressure at —186.1° C., and in the solid state it melts at —189.5° C. Argon is nearly 2½ times as soluble in water as nitrogen. As a gas it is more opaque to the Röntgen rays than either nitrogen or oxygen. It forms about 94 per cent. by volume or 1.33 per cent by weight of the atmosphere. The fact that this substance was actually obtained by Cavendish in 1785 is interesting, although he did not pursue its examination or ascertain its elementary character.
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Chambers's Twentieth Century Dictionary
    • n Argon ar′gon a constituent element of our atmosphere, discovered in 1894 by Rayleigh and Ramsay.
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Webster's Revised Unabridged Dictionary
NL., fr. Gr. , neut. of inactive; priv. + work


In literature:

The atmosphere of the earth, we now know, contains far more oxygen or far less argon (whichever way one likes to put it) than does Mars.
"The War of the Worlds" by H. G. Wells
There is another Tartar governor of Persia at Tauris, named Argon, who presides over the tribute.
"A General History and Collection of Voyages and Travels, Vol. I" by Robert Kerr
He had two sons (Argon and Ruro) and one daughter.
"Character Sketches of Romance, Fiction and the Drama, Vol 1" by The Rev. E. Cobham Brewer, LL.D.
The atmosphere of the earth is composed mainly of very volatile elements, known as nitrogen and argon.
"Outlines of the Earth's History" by Nathaniel Southgate Shaler
Argon means lazy or inert, the element being so named because of its inactivity.
"An Elementary Study of Chemistry" by William McPherson
So 'the truth' is not 'argon', it is a ferment.
"Expositions of Holy Scripture" by Alexander Maclaren
Argon and helium occur in some of the "simple thermal" and "thermal sulphur waters.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2" by Various
Fill a gasometer with purified argon and we'll introduce a few of these crystals and explode them.
"Poisoned Air" by Sterner St. Paul Meek
The discovery of argon came about in a rather singular way.
"A History of Science, Volume 5(of 5)" by Henry Smith Williams
I kept in the shadows of the shabby buildings of Argon City, and I found the window without effort.
"B-12's Moon Glow" by Charles A. Stearns
Such shiftings are noted in the cases of tellurium and iodine; cobalt and nickel; argon and potassium.
"A Brief Account of Radio-activity" by Francis Preston Venable
Another method of preparing argon is by fractionation of liquid air.
"The New Gresham Encyclopedia. Vol. 1 Part 2" by Various
The argon ultimately found was 75.0 c.c., or a little more than 1% of the atmospheric nitrogen used.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5" by Various
Of these, argon and its allies were the last to be definitely isolated.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
Traces of radium have been revealed, and the gases contain argon and helium.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Slice 4" by Various
Thus argon has a larger number than potassium, but must precede it to fit into its proper place.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3" by Various
Argon, increase of, 236.
"Climatic Changes" by Ellsworth Huntington
They soon succeeded in isolating this denser gas, to which they gave the name of argon.
"Marvels of Scientific Invention" by Thomas W. Corbin
Mice were exposed to 80 percent argon and 20 percent oxygen continuously at 1-atmosphere pressure for 35 days at Oklahoma City University.
"Significant Achievements in Space Bioscience 1958-1964" by National Aeronautics and Space Administration
Recent discoveries have definitely identified new gases in it, however, chief among which is argon.
"The Progress of Invention in the Nineteenth Century." by Edward W. Byrn

In news:

An experiment to prove the existence of this dark matter will use a pure form of argon from Colorado.
Deaths from argon inhalation happen far too frequently in the metals industry, and the main reason for it is lack of awareness.
Too many people only think of argon as being an inert gas, and they do not take into consideration that it is heavier than air and can be a danger to them when working in their shops.
Boeing wraps up Argon ST purchase.
The Boeing Company and Argon have entered into an agreement whereby Boeing will acquire Argon ST in an all-cash tender offer and merger for $34.50 per share, or approximately $775 million, net of cash acquired.
Oxygen is the second most abundant gas, at about 20 percent, followed by argon at about 1 percent.
VEKA windows incorporate the latest glass technology, using plantitherm glass and argon-filled units to maximise insulation .
ABB digital positioner stabilizes flow, helps gas separation plant increase argon production by 10.
Updated Monday, Nov 26, 2012, at 6:04 p.m. A Hard X-ray Nanoprobe is employed at Argone National Laboratory.
Windows these days can be pretty high tech, it is not uncommon to see double and even triple paned window filled with Argon and coated with special materials to limit heat gain, or reduce heat losses.
The 1355 Series Windows are dual-pane, argon-enhanced units and are said to be very easy to install .
The Magna Carta's new display box, made of aircraft-quality metal, is filled with argon gas to preserve the parchment.
Definitely the best wine-by-the-glass offerings, all dispensed by an argon-propelled Cruvinet system, along with proper stemware and delectable, creative bar snacks.
The second most common gas found is argon which is also present in Earth's atmosphere.
Argon Masking Corp. Associated Rack Corp. Device Technologies, Inc.

In science:

ATLAS Collaboration, Results from an Expanded Combined Test of the Electromagnetic Liquid Argon Calorimeter with a Hadronic Scintil lating-Tile Calorimeter, Submitted to NIM A, 2000.
Hadron Energy Reconstruction for the ATLAS Barrel Prototype Combined Calorimeter in the Framework of the Non-parametrical Method
When neutrinos interact with chlorine, they occasionally produce a radioactive isotope of argon.
How the sun shines
Singer, Estimation of the adequacy of the 12-6 potential for liquid Argon by means of Monte Carlo calculations, J.
An Introduction to Monte Carlo Simulation of Statistical physics Problem
FIG. 1: The Gaussian choice for f (q) compared with the Fourier transform of g (r)v ′′ (r) at ∼ 10K , v(r) being the Lennard-Jones pair potential which is supposed to model the Argon pair interactions.
Vibrations in glasses and Euclidean Random Matrix theory
Argon at very low temperature (∼ 10K ) together with that of (25) in the purely Gaussian case.
Vibrations in glasses and Euclidean Random Matrix theory
So we are led to suspect that the stretching and scaling properties of α relaxation hold in principle even in argon and sodium, although an experimental verification will be extremely difficult .
Structural Relaxation and Mode Coupling in a Simple Liquid: Depolarized Light Scattering in Benzene
Fig. 1. A 7 mW beam of 351.1 nm light from an argon-ion laser illuminates a pair of 0.6 mm thick β -barium borate crystals, cut for degenerate downconversion at a half-opening angle of 3.3◦ .
Diagnosis, prescription and prognosis of a Bell-state filter by quantum process tomography
In particular, using simulations and measurements, it is shown that an Argon-CF4 mixture is optimal for operation at a future Linear Collider.
First tests of a Micromegas TPC in a magnetic field
Gain as a function of the mesh voltage, measured with a 55Fe source and a calibrated amplification chain, for various percentages of CF4 in Argon.
First tests of a Micromegas TPC in a magnetic field
Attachment coefficient of an Argon (97%) CF4 mixture as a function of the electric field.
First tests of a Micromegas TPC in a magnetic field
Four different chemical elements are considered, namely, oxygen, sulphur, argon and neon.
An estimate of the time variation of the abundance gradient from planetary nebulae III. O, S, Ar, and Ne: A comparison of PN samples
Their sulphur abundances, and to a lesser extent, argon, are generally lower than in the basic sample (cf.
An estimate of the time variation of the abundance gradient from planetary nebulae III. O, S, Ar, and Ne: A comparison of PN samples
A comparison of the abundances of the basic sample and the additional samples is shown in Figs. 1 to 4 for oxygen, sulphur, argon and neon, respectively.
An estimate of the time variation of the abundance gradient from planetary nebulae III. O, S, Ar, and Ne: A comparison of PN samples
How ever, both the sulfur and argon abundances of the PN indicate that [Fe/H] < −2 and possibly as low as −2.3, considering that, for low metallicity stars, [Fe/H] tends to be a few 0.1 dex smaller than [Ar/H] (e.g.
The Planetary Nebula population of the Sagittarius Dwarf Spheroidal Galaxy
The main design feature of GERDA is to use a cryogenic liquid (Argon) as the shield against gamma radiation , the dominant background in earlier experiments .
Characterization of the first true coaxial 18-fold segmented n-type prototype detector for the GERDA project