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单词 neon
释义

neon


ne·on

N0058700 (nē′ŏn′)n.1. Symbol Ne A rare, inert gaseous element occurring in the atmosphere to the extent of 18 parts per million and obtained by fractional distillation of liquid air. It is colorless but glows reddish orange in an electric discharge and is used in lasers, as a cryogen, and in cathode-ray tubes and other display devices. Atomic number 10; atomic weight 20.180; melting point -248.59°C; boiling point -246.08°C. See Periodic Table.2. Electric signage made with neon lights.3. An extremely bright shade of a color.4. A neon tetra.adj.1. Of, relating to, or containing neon.2. Of or relating to a form of lighting used especially on advertising signs and consisting of glass tubes filled with neon or other gases that emit colored light when subjected to an electric current.3. Extremely bright or vivid; fluorescent: neon purple.
[From Greek, neuter of neos, new; see newo- in Indo-European roots.]

neon

(ˈniːɒn) n1. (Elements & Compounds) a colourless odourless rare gaseous element, an inert gas occurring in trace amounts in the atmosphere: used in illuminated signs and lights. Symbol: Ne; atomic no: 10; atomic wt: 20.1797; valency: 0; density: 0.899 90 kg/m3; melting pt: –248.59°C; boiling pt: –246.08°C2. (Electrical Engineering) (modifier) of or illuminated by neon or neon lamps: neon sign. [C19: via New Latin from Greek neon new]

ne•on

(ˈni ɒn)

n. 1. a chemically inert gaseous element occurring in small amounts in the earth's atmosphere, used chiefly in a type of electrical lamp. Symbol: Ne; at. wt.: 20.183; at. no.: 10; density: 0.9002 g/l at 0°C and 760 mm pressure. 2. a sign or advertising sign formed from neon lamps. [1895–1900; < Greek néon new, recent]

ne·on

(nē′ŏn′) Symbol Ne A rare element that is a noble gas and occurs naturally in extremely small amounts in the atmosphere. It is colorless but glows reddish orange when electricity passes through it, such as in a tube in an electric sign. Neon is also used for refrigeration. Atomic number 10. See Periodic Table.
Thesaurus
Noun1.neon - a colorless odorless gaseous element that give a red glow in a vacuum tubeneon - a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amountsatomic number 10, Nechemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matterargonon, inert gas, noble gas - any of the chemically inert gaseous elements of the helium group in the periodic tableair - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
Translations
氖霓虹灯

neon

(ˈniːon) noun an element, a colourless gas used in certain forms of electric lighting, eg advertising signs.

neon

霓虹灯zhCN

neon


neon

(nē`ŏn) [Gr.,=new], gaseous chemical element; symbol Ne; at. no. 10; at. wt. 20.1797; m.p. −248.67&degC;; b.p. −246.048&degC;; density 0.8999 grams per liter at STPSTP
or standard temperature and pressure,
standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0&degC; or 273.15&degK;.
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; valence 0. Neon is a colorless, odorless, and tasteless gas. It is one of the inert gasesinert gas
or noble gas,
any of the elements in Group 18 of the periodic table. In order of increasing atomic number they are: helium, neon, argon, krypton, xenon, and radon. They are colorless, odorless, tasteless gases and were once believed to be entirely inert, i.e.
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 in Group 18 of the periodic tableperiodic table,
chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arranged in columns and rows according to increasing atomic number (see the table entitled
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; it does not form compounds in the normal chemical sense. A small amount of neon in a partially evacuated glass tube emits a bright reddish-orange glow while conducting electricity. Neon is a rare gas present in the atmosphere to a very limited extent. It is obtained as a byproduct in the production of liquid air. The greatest commercial use of neon is in advertising signs (see lightinglighting,
light produced by artificial means to allow visibility in enclosures and at night. For stage lighting, see scene design and stage lighting. Early Sources of Artificial Lighting
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). It is also used in high-intensity beacons, in some electron tubes, in Geiger counters, in automotive ignition timing lights, and in high-voltage warning indicators. It is used for particle detection in high-energy physics research. Neon finds use in laserslaser
[acronym for light amplification by stimulated emission of radiation], device for the creation, amplification, and transmission of a narrow, intense beam of coherent light. The laser is sometimes referred to as an optical maser.
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 both as a light-emitting agent and as a coolant. Liquid neon is a particularly good cryogenic refrigerant since it will absorb more heat without vaporizing than an equal volume of liquid helium or liquid hydrogen. Neon was discovered in 1898 by William RamsayRamsay, Sir William,
1852–1916, Scottish chemist. He was professor of chemistry at University College, Bristol (1880–87), and at University College, London (1887–1912).
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 and M. W. Travers.

Neon

 

(Latin, neonum), Ne, a chemical element of Group VIII in the Mendeleev periodic system. An inert gas: atomic number, 10; atomic weight, 20.179. On earth it is found mainly in the atmosphere, which is estimated to contain 7.1 × 1011 tons of neon. The neon content of air is about 16 cm3/m3. Atmospheric neon is a mixture of three stable isotopes—20Ne, 21Ne, and 22Ne; the first isotope predominates (90.92 percent). Neon was discovered in 1898 by the British scientists W. Ramsay and M. Travers during their study of the highly volatile fraction of liquid air. The name “neon” is derived from the Greek neos, “new.”

Under ordinary conditions, neon is a colorless, odorless gas. At 0°C and 760 mm of mercury (101 kilonewtons per sq m), the density of neon is 0.900 g/l; melting point, —248.6°C; boiling point, -245.9°C (at 101 KN/m2); solubility in water, 10.4 ml/l. Solid neon has a cubic crystal lattice; the lattice constant a of the unit cell is 4.52 angstroms at —253°C. The neon molecule is monatomic; the outer electron shell of the neon atom contains eight electrons and is highly stable. Neon compounds have not yet been synthesized.

Neon is produced by the fractionation of air. Its largest single use is in electrical engineering. Neon-filled lamps emitting red light are used at harbors, airports, and other locations. Liquid neon is coming to be used in the production of low temperatures.

neon

[′nē‚än] (chemistry) A gaseous element, symbol Ne, atomic number 10, atomic weight 20.179; a member of the family of noble gases in the zero group of the periodic table.

neon

An inert gas which produces a reddish orange glow when used in an electric discharge lamp.

neon

a colourless odourless rare gaseous element, an inert gas occurring in trace amounts in the atmosphere: used in illuminated signs and lights. Symbol: Ne; atomic no.: 10; atomic wt.: 20.1797; valency: 0; density: 0.899 90 kg/m3; melting pt.: --248.59?C; boiling pt.: --246.08?C

Neon

Charles Duff. An object-oriented extension of FORTH, for theMac. Inheritance, SANE floating-point, system classes andobjects for Mac interfacing, overlays. Sold by Kriya Systems,1985-1988. Modified, made PD and renamed Yerk.

neon


neon

 (Ne) [ne´on] a chemical element, atomic number 10, atomic weight 20.183. (See Appendix 6.)

ne·on (Ne),

(nē'on), An inert gaseous element in the atmosphere, separated from argon by W. Ramsay and M. Travers in 1898; atomic no. 10, atomic wt. 20.1797. [G. neos, new]

ne·on

(nē'on) An inert gaseous element in the atmosphere; atomic no. 10, atomic wt. 20.1797. [G. neos, new]
FinancialSeeNESee NE

NEON


AcronymDefinition
NEONNational Ecological Observatory Network
NEONNew Era Of Networks
NEONNational Equal Opportunities Network (New Zealand)
NEONNews for Educators Online Now
NEONNevada Elders on the Net
NEONNEC Enterprise Open Network
NEONNew Energy Options for Northerners (Canada)
NEONNorth Eastern Optical Network (Mainecom)

neon


  • noun

Synonyms for neon

noun a colorless odorless gaseous element that give a red glow in a vacuum tube

Synonyms

  • atomic number 10
  • Ne

Related Words

  • chemical element
  • element
  • argonon
  • inert gas
  • noble gas
  • air
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