Because of the non-reactive properties of inert gases they are often useful to prevent undesirable chemical reactions from taking place. For example molecular nitrogen, a molecular inert gas, is often used in food packaging to ensure that food does not spoil in transit since no bacteria or fungi can flourish without the reactive gases oxygen or carbon dioxide, which the molecular nitrogen displaces, since most extant cells on Earth require the reactions which these gases are involved in to function. Most importantly since molecular nitrogen ...

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Inert gas, Inert gas - Production, Inert gas - Applications

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See also:

Inerting system, Inerting system - Use in military aircraft, Inerting system - Use in commercial aircraft after Flight 800

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Definition and meaning of inert:

inert - refers to unmoving or unchanging. In chemistry, a substance which does not or rarely combines with other substances. In medicine, it means a substance that has little or no effect on the human body

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

Also see these pages: Oceanography, Oceanography Sitemap, Coral Reef, Environment, Sustainability, Climate Change,

If the phenomena we are considering had been limited to the movement of objects, they would have remained, as we have already remarked, within the domain of physical science; but so far was this from being the case, that they speedily proved to be only the forerunners of facts of a character still more extraordinary. For it was soon found that the impulsion communicated to inert objects was not the mere product of a blind mechanical force, but that it revealed the action of an intelligent cause, a discovery that opened up a new field of observation, and promised a solution of many mysterious problems.

From "The Spirits book" By Allan Karde (1804-1869.

Read more here: » Spiritism, Introduction of The Spirits book - Part II of VI

The fire triangle is a useful teaching tool, but fails to identify the fourth essential element of fire: the sustaining chemical reaction. This has led to development of the fire tetrahedron: a triangular pyramid having four sides (including the bottom). In most fires it simply doesn’t matter which element gets removed; the fire fails to ignite, or it goes out. However, there are certain chemical fires where knowin ...

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Fire triangle, Fire triangle - Fire tetrahedron

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The word God combines with the five material elements or tatvas to constitute the body, which is an equipment of action without cause. The inert material elements are imbued with the faculties of feeling, thought and action through the organs of the body.

Consequently, assumption of doership, ego and duality arise in this state. This intellect tends to oscillate between sublime consciousness and materialism. This conflict, antar-dhvan , continues till the intellect settles down in a state of reintegration, which is samta in its unmodified source - utter sublime consciousness.

(See also: Samta, God and Religion, Peace on Earth, Peace of Mind, Love and Happiness, Life and Beyond, Body Mind and Soul)

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The Bohr model is accurate only for one-electron systems such as the hydrogen atom or singly-ionized helium. This section uses the Bohr model to derive the energy levels of hydrogen. The derivation starts with three simple assumptions: 1) All particles are wavelike, and an electron's wavelength λ, is related to its velocity v by: where h is Planck's Constant, and me is the mass of the ...

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Bohr model, Bohr model - History, Bohr model - Refinements, Bohr model - Electron energy levels in hydrogen, Bohr model - Energy in terms of other constants, Bohr model - Rydberg Formula, Bohr model - Shortcomings

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The Rydberg formula describes the transitions or quantum jumps between one energy level and another. When the electron moves from one energy level to another, a photon is given off. Using the derived formula for the different 'energy' levels of hydrogen one may determine the 'wavelengths' of light that a hydrogen atom can give off. The energy of photons that a hydrogen atom can give off are given by the difference of two hydrogen energy levels: where nf< ...

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Bohr model, Bohr model - History, Bohr model - Refinements, Bohr model - Electron energy levels in hydrogen, Bohr model - Energy in terms of other constants, Bohr model - Rydberg Formula, Bohr model - Shortcomings

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Xenon is a chemical element in the periodic table that has the symbol Xe and atomic number 54. A colorless, very heavy, odorless noble gas, xenon occurs in the earth's atmosphere in trace amounts and was part of the first noble gas compound synthesized. Xenon - Notable characteristics. Xenon is a member of the zero-valence elements that are called noble or inert gases. The word "inert" is no longer used to describe this chemical series since some zero valence elements do form compounds. ...

Including:

Xenon - Notable characteristics Xenon - Applications Xenon - History Xenon - Occurrence Xenon - Compounds Xenon - Isotopes Xenon - Precautions

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An active ingredient, also active pharmaceutical ingredient (or API), is the substance in drug that is pharmaceutically active. A capsule, tablet, syrup, intravenous fluid, or any other formulation of a drug is traditionally composed of two things: The API, which is the drug itself; and an excipient, which is the substance of the tablet, or the liquid the API is suspended in, or other material that is pharmaceutically inert. See also: counterfeit drug. ...

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In atomic physics, the Bohr model depicts the atom as a small, positively charged nucleus surrounded by electrons in orbit - similar in structure to the solar system, but with electrostatic forces providing attraction, rather than gravity. Its key success was in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen; while the Rydberg formula had been known experimentally, it did not gain a theoretical underpinning until the Bohr model was introduced. The Bohr model is not a complete model of the atom, and f ...

Including:

Bohr model - History Bohr model - Refinements Bohr model - Electron energy levels in hydrogen
Bohr model - Energy in terms of other constants
Bohr model - Rydberg Formula Bohr model - Shortcomings

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The Bohr model gives an incorrect value for the ground state orbital angular momentum. The angular momentum in the true ground state is known to be zero. The Bohr model also has difficulty with or fails to explain: The spectra of larger atoms. At best, it can make some approximate predictions about the emission spectra for atoms with a single outer-shell electron (atoms in the lithium group.) The relative intensities of spectral lines; although in some simple cases, it was able to provide reasonable estimates (f ...

See also:

Bohr model, Bohr model - History, Bohr model - Refinements, Bohr model - Electron energy levels in hydrogen, Bohr model - Energy in terms of other constants, Bohr model - Rydberg Formula, Bohr model - Shortcomings

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A crucible is a cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures. The receptacle is usually made of porcelain or an inert metal. One of the earliest uses of platinum was to make crucibles. More recently, metals such as nickel and zirconium have been used. Crucibles are commonly used with a high temperature-resistant crucible cover (or lid) made of a similar material. Crucibles and their covers made of porcelain are quite cheap when sold in quantity to laboratories ...

Including:

Crucible - Use in chemical analysis

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AIM is a three-letter abbreviation with multiple meanings, as described below: AOL Instant Messenger A I M Management Group Inc. (AIM Investments) Abductory Inductive Mechanism Abrams Integrated Management Abridged Index Medicus Absorption Isotherm Measurement Accunet Information Manager (AT&T) Accuracy in Media (news media watchdog) Acquisition Information Management Action Item Master Active Inert Missile Ada Interacti ...

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A Yablochkov candle (sometimes electric candle) is a type of electric carbon arc lamp, invented in 1876 by Pavel Yablochkov. It consisted of a sandwich of two long carbon blocks, approximately 6 by 12 millimetres in cross-section, separated by a block of inert material such as plaster of paris or kaolin. There was a small piece of fuse wire or carbon paste linking the two carbon blocks at the top end. The assembly ...

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Arc welding refers to a group of welding processes that use a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non-consumable electrodes. The welding region is sometimes protected by some type of inert or semi-inert gas, known as a shielding gas, and/or filler material. Arc welding - Development. While examples of welding go back to the Bronze Age a ...

Including:

Arc welding - Development Arc welding - Power supplies Arc welding - Consumable electrode methods Arc welding - Non-consumable electrode methods Arc welding - Corrosion issues Arc welding - Safety issues

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Kaula (or Ka‘ula in Hawaiian) is a small, crescent-shaped island in the Northwestern Hawaiian Islands in the state of Hawaii, about 20 miles to the west-southwest of Niihau. The island is actually the very top of a volcanic tuff cone that rests on top of a larger, submerged shield volcano. At its highest point, the island reaches a height of 548 feet / 167 meters. Kaula is uninhabited but fishermen frequent the island. The island is also used for military exercises (inert warheads are used). A lighthouse was maintained on the island by ...

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Chi has several meanings and pronunciations. Among them are: A common romanization for qi (traditional chinese: 氣, simplified chinese: 气, pin-yin: qi, Wade-Giles: ch'i), a fundamental concept of Chinese culture, meaning "air", but also a basic inert matter-particle, the building block, and the life force within everything. Chi is referred to in martial arts as well as Traditional Chinese medicine. a character in the name of the martial art T'ai Chi Ch'uan a letter of the Greek al

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Nitrogen is the chemical element in the periodic table that has the symbol N and atomic number 7. Commonly a colorless, odorless, tasteless and mostly inert diatomic non-metal gas, nitrogen constitutes 78 percent of Earth's atmosphere and is a constituent of all living tissues. Nitrogen forms many important compounds such as amino acids, ammonia, nitric acid, and cyanides. Nitrogen - Notable characteristics. Nitrogen is a non-metal, with an electronegativity of 3.0. It has five electron ...

Including:

Nitrogen - Notable characteristics Nitrogen - Applications
Nitrogen - Nitrogen Compounds Nitrogen - Molecular nitrogen gas and liquid
Nitrogen - History Nitrogen - Occurrence Nitrogen - Compounds Nitrogen - Biological role Nitrogen - Isotopes Nitrogen - Precautions

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A solvent is a liquid that dissolves a solid, liquid, or gaseous solute, resulting in a solution. The most common solvent in everyday life is water. The term organic solvent refers to most other solvents that are organic compounds and contain carbon atoms. Solvents usually have a low boiling point and evaporate easily or can be removed by distillation, thereby leaving the dissolved substance behind. Solvents should therefore not react chemically with the dissolved compounds — they have to be inert. Solvents can also be ...

Including:

Solvent - Polarity solubility and miscibility Solvent - Protic and aprotic solvents Solvent - Boiling point Solvent - Density Solvent - Chemical interactions Solvent - Safety
Solvent - General precautions
Solvent - Properties table of common solvents

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