Argon is the third most common gas in the Earth's atmosphere, at 0. 93 % ( 9, 300 ppm ), making it approximately 23. 8 times as abundant as next most common atmospheric gas, carbon dioxide ( 390 ppm ), and more than 500 times as abundant as the next most common noble gas, neon ( 18 ppm ).

Argon lasers emit at 13 wavelengths through the visible, ultraviolet, and near-visible spectrum, including: 351. 1 nm, 363. 8 nm, 454. 6 nm, 457. 9 nm, 465. 8 nm, 476. 5 nm, 488. 0 nm, 496. 5 nm, 501. 7 nm, 514. 5 nm, 528. 7 nm, 1092. 3 nm.

Experiments were made on an electric arc applying a porous graphite anode cooled by a transpiring gas ( Argon ).

Argon was used as a blowing gas to exclude any effects of dissociation or chemical reaction.

Argon was also blown at low velocities ( mass flow rate Af ) through a tube coaxial with the cathode as an additional precaution against contamination of the arc by air.

Argon ( ) is a chemical element with symbol Ar and atomic number 18.

Argon is produced industrially by the fractional distillation of liquid air.

Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily non-reactive substances become reactive ; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning.

Argon gas also has uses in incandescent and fluorescent lighting, and other types of gas discharge tubes.

Argon makes a distinctive blue-green gas laser.

Argon has approximately the same solubility in water as oxygen and is 2. 5 times more soluble in water than nitrogen.

Argon is colorless, odorless, and nontoxic as a solid, liquid, and gas.

Argon is chemically inert under most conditions and forms no confirmed stable compounds at room temperature.

Argon ( αργος, Greek meaning " inactive ", in reference to its chemical inactivity ) was suspected to be present in air by Henry Cavendish in 1785 but was not isolated until 1894 by Lord Rayleigh and Sir William Ramsay in Scotland in an experiment in which they removed all of the oxygen, carbon dioxide, water and nitrogen from a sample of clean air.

Argon was also encountered in 1882 through independent research of H. F. Newall and W. N.

Argon became the first member of the noble gases to be discovered.

Argon is isolated from air by fractionation, most commonly by cryogenic fractional distillation, a process that also produces purified nitrogen, oxygen, neon, krypton and xenon.

Argon is notable in that its isotopic composition varies greatly between different locations in the solar system.

Argon, carried in a small, separate tank, connected only to the inflator of the drysuit is preferred to air, since air conducts heat 50 % faster than argon.

However it is important to note that whichever form of argon purchased, it should have a guaranteed purity of 99. 9 % Argon at a minimum.

Argon can be up to 30 % efficient, but requires an even greater pressure increase.

** Argon with 25 – 35 % helium and 1 – 2 % CO < sub > 2 </ sub > provides high productivity and good welds on austenitic stainless steels.

** Argon with 2 – 5 % nitrogen and 2 – 5 % CO < sub > 2 </ sub > in short-circuiting yields good weld shape and color and increases welding speed.

* 1954 – Argon oxygen decarburization ( AOD ) refining invented by scientists at the Union Carbide Corporation

* Argon identified by Lord Rayleigh and Sir William Ramsay.

Reading The Eye of Argon aloud has been made into a game, as described by SF critic Dave Langford in SFX magazine: " The challenge of death, at SF conventions, is to read The Eye of Argon aloud, straight-faced, without choking and falling over.

* The Eye Of Argon — Rules for a Reading by Mary Mason

Argon does not appear in the published The Silmarillion at all, as he only came to light in very late writings by Tolkien.

* Heat Seeker or Hot Shot-A standard bullet propelled by the unstable element, ' Argon 886 '.

Huntarr is genetically engineered by Argon to destroy the Micronauts, but Marionette makes him see that Argon is simply using him.

Argon is finally revealed to be controlled by the spirit of Baron Karza, who returns once more.

Karza kills Argon, and deals the Micronauts a crushing defeat by killing Devil, Pharoid, Slug and Margrave.

She was once the sword of Argon the Ageless, but was used by Argon as the nose of a snowman, and left there for centuries.

Commentary by Dr. J. Argon, LEP consultant and grand probemeister of the Psych Brotherhood.

The Player's first ship is an Argon Discoverer. As with the originals, X2: The Threat is a Space trading and combat simulator set in the fictional X-Universe, a network of sectors, linked by large space gates.

# Argon Oil ( 1: 13 )

From left to right: 1 mW Uniphase Helium-neon laser | HeNe on alignment-rig, 2 Watt Lexel 88 Argon Ion laser, and power-supply.

Argon ( Ar ) has 24 known isotopes, from < sup > 30 </ sup > Ar to < sup > 53 </ sup > Ar and 1 isomer (< sup > 32m </ sup > Ar ), three of which are stable, < sup > 36 </ sup > Ar, < sup > 38 </ sup > Ar, and < sup > 40 </ sup > Ar.

That 1 electron will be accepted by Cl ( 17 ) so that Cl can attain the stable state of Argon ( 18 ), its nearest inert element.

Argon and neon isotopes in samples of three types of solar wind ( fast, slow, and coronal mass ejections from the Sun ’ s surface ) were captured and quantified.

Argon, a gas denser than air, is often used in insulated glazing ( double paned windows ) to improve their insulation characteristics.