WordNet

an electric lamp in which the light comes from an electric discharge between two electrodes in a glass tube (同)gas-discharge lamp
remove the charge from
a substance that is emitted or released (同)emission
any of several bodily processes by which substances go out of the body; "the discharge of pus" (同)emission, expelling
electrical conduction through a gas in an applied electric field (同)spark, arc, electric arc, electric_discharge
the act of discharging a gun (同)firing, firing off
the act of venting (同)venting
the pouring forth of a fluid (同)outpouring, run
the sudden giving off of energy
release from military service (同)muster out
pour forth or release; "discharge liquids"
(of a situation) exceptionally tense; "an atmosphere electric with suspicion"
a car that is powered by electricity (同)electric automobile, electric car
using or providing or producing or transmitting or operated by electricity; "electric current"; "electric wiring"; "electrical appliances"; "an electrical storm" (同)electrical
affected by emotion as if by electricity; thrilling; "gave an electric reading of the play"; "the new leader had a galvanic effect on morale" (同)galvanic, galvanizing, galvanising
having lost your job (同)dismissed, fired, laid-off, pink-slipped

PrepTutorEJDIC

放電
〈船〉‘の'『荷を降ろす』;(積荷・客を)〈船〉‘から'降ろす《+『名』〈船〉+『of』+『名』〈荷〉》;(船から)〈積荷・客〉‘を'降ろす《+『名』〈荷〉+『from』+『名』〈船〉》 / (…に)…‘を'『発射する』《+『名』+『at』(『into』)+『名』》 / 〈煙・液体〉‘を'『出す』,排出する / (…から)〈人〉‘を'解放する,‘に'行くことを許す《+『名』〈人〉+『from』+『名』》 / (仕事から)〈人〉‘を'解雇する,くびにする《+『名』〈人〉+『from』+『名』》 / 〈職務・義務・約束など〉‘を'果たす,遂行する(fulfill) / 〈借金〉‘を'返済する,支払う(pay) / 〈電池など〉‘から'放電する / 〈船が〉『荷を降ろす』,荷揚げする / 〈水などが〉流れ出る,注ぐ,流出する / 〈鉄砲などが〉発射される / 放電する / 〈U〉『荷降ろし』,荷揚げ / 〈C〉発砲,発射 / 〈C〉『放出』,流出,排出;排出物 / 〈U〉解任,退出,解雇;解放,釈放 / 〈U〉(職務・義務などの)『遂行』,履行 / 〈U〉(負債の)『返済』,弁済 / 〈C〉〈U〉(電気の)放電
《名詞の前にのみ用いて》『電気の』;電気が引き起こす / 《名詞の前にのみ用いて》電気で動く,電動の;電気を起こす,発電の / 興奮させる,はらはら(ぞくぞく)させる

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/05/13 16:53:12」(JST)

wiki en

Voltage versus current characteristics for neon gas at 1 Torr pressure between flat electrodes spaced 50 cm. A-D dark discharge, D-I glow discharge, I-K arc. A-B represent non-self-sustaining discharge and collection of spontaneously-generated ions. B-D is the Townsend region, where the cascade multiplication of carriers takes place. D-E is the transition to a glow discharge, breakdown of the gas. E-G represents transition to a normal glow; in the regions around G, voltage is nearly constant for varying current. The region G-I represents abnormal glow, as current density rises. I-J represents transition to an arc discharge.

Electric discharge describes any flow of electric charge through a gas, liquid or solid. Electric discharges include:

Brush discharge
Dielectric barrier discharge
Corona discharge
Electric glow discharge
Electric arc
Electrostatic discharge
Electric discharge in gases
Leader (spark)
Partial discharge
Streamer discharge
Vacuum arc
Townsend discharge

Applications

The properties and effects of electric discharges are useful over a wide range of magnitudes. Tiny pulses of current are used to detect ionizing radiation in a Geiger–Müller tube. A low steady current can be used to illustrate the spectrum of gases in a Gas-filled tube. A neon lamp is an example of a gas-discharge lamp, useful both for illumination and as a voltage regulator. A flashtube generates a short pulse of intense light useful for photography by sending a heavy current through a gas arc discharge. Corona discharges are used in photocopiers.

Electric discharges can convey substantial energy to the electrodes at the ends of the discharge. A spark gap is used in internal combustion engines to ignite the fuel/air mixture on every power stroke. Spark gaps are also used to switch heavy currents in a Marx generator and to protect electrical appratus. In electric discharge machining, multiple tiny electric arcs are used to erode a conductive workpiece to a finished shape. Arc welding is used to assemble heavy steel structures, where the base metal is heated to melting by the heat of the arc. An electric arc furnace sustains arc currents of tens of thousands of amperes and is used for steelmaking and production of alloys and other products.

Natural phenomena

St. Elmo's fire
Lightning
Electric organ

UpToDate Contents

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Iskander SM1, Brazil B2, Novak JT1, He Z3.
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Understanding performance limitation and suppression of leakage current or self-discharge in electrochemical capacitors: a review.

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PEO-generated Surfaces Support Attachment and Growth of Cells In Vitro with No Additional Benefit for Micro-roughness in Sa (0.2-4 μm).

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