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

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 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 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 constitutes 0. 934 % by volume and 1. 28 % by mass of the Earth's atmosphere, and air is the primary raw material used by industry to produce purified argon products.

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

The Eye of Argon, Jim Theiss ' only work of fiction, is an unusual example: it is famous ( or rather infamous ) for its lack of quality.

The Noldor are caught off-guard, and Fingolfin's son Argon is slain after a valiant fight that nevertheless dismays the enemy.

She is the daughter of Fingolfin and Anairë, sister of Fingon, Turgon and Argon, and mother of Maeglin.

Argon cylinders should always be clearly marked so that a diver does not accidentally attach a breathing regulator ; this is a potential hazard especially for technical divers, who often carry several independent cylinders and regulators.

The Eye of Argon is a heroic fantasy novella that narrates the adventures of Grignr, a barbarian.

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.

Argon gas is the most common gas used in HIP because it is an inert gas, thus prevents chemical reactions during the operation.

* Argon was the first gas used in fluorescent tubes and is still frequently used due to its low cost, high efficiency, and very low striking voltage.

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 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.

It runs on several hardware platforms including LTE ( Motorola V300, V500, V600, E398, RAZR V3 and others featuring the ARM7 processor ), LTE2 ( Motorola L7 and upcoming devices with 176x220 screen resolution ), Rainbow POG ( 3G phones featuring an MCORE processor from Motorola E1000 to RAZR V3x ), Argon ( all new 3G phones with 532 MHz ARM11 processor since Motorola RAZR maxx V6 and V3xx ) and others.

A war against Argon and his forces follows, with several beings from various locations in the Microverse-Pharoid, Slug and Margrace-joining the team in a bid to stop Argon.

However, it quickly becomes clear that the Argon have no knowledge of Earth, and most dismiss Brennan as a crank when he claims to be from Earth.

After convincing the Argon that Earth is real, Brennan works with them-specifically, with Ban Danna, Head of the Argon Secret service-to prevent the Terraformers, now known as the Xenon, from developing a super-weapon.

* The adventures of Argon Zark, young cyber hero for the digital age-reprint of Philadelphia Inquirer article from June 5, 1997 as retitled for distribution by Knight-Ridder wire service

Kyle re-awakens from his coma, though his brain waves are still linked to the Kha ' ak, leading them to open another an assault in Paranid space, and the Argon Federation to declare him an enemy to appease the Paranid.

In this installment, Colfer describes Opal Koboi's coma situation from the perspective of Doctor Jerbal Argon, a fictional fairy gnome psychiatrist taking care of his incarcerated, " celebrity " patient :" If only every fairy in the facility was as docile as Opal Koboi.

* Argon, the Augmented Reality browser from Georgia Tech

In between bombings and falling in love, Leigh-Cheri is approached by an unusually beautiful woman who claims she is from the planet of Argon.

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.

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.

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

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

* Argon identified by Lord Rayleigh and Sir William Ramsay.

* 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.