- negative spark
- A spark that jumps from the negative center electrode to the positive ground electrode of the spark plug, allowing a reduction in the high voltage required
Dictionary of automotive terms. 2015.
negative spark
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spark — The bridging or jumping of a gap between two electrodes by a current of electricity. One of the essential factors in a combustion engine (Fuel, Air, Proper proportion of mixture, compression, timing, Spark). See electronic spark advance… … Dictionary of automotive terms
Spark spread — The spark spread is the theoretical gross margin of a gas fired power plant from selling a unit of electricity, having bought the fuel required to produce this unit of electricity. All other costs (operation and maintenance, capital and other… … Wikipedia
Spark Spread — The difference between the market price of electricity and its cost of production. The spark spread can be negative or positive. If it is negative, the utility company loses money, while if it is positive, the utility company makes money. This… … Investment dictionary
Negative electricity — Electricity E lec*tric i*ty ([=e] l[e^]k*tr[i^]s [i^]*t[y^]), n.; pl. {Electricities} ([=e] l[e^]k*tr[i^]s [i^]*t[i^]z). [Cf. F. [ e]lectricit[ e]. See {Electric}.] 1. (Physics) a property of certain of the fundamental particles of which matter… … The Collaborative International Dictionary of English
spark — electric current electric current, electrical current electrical current, the movement of electrically charged particles, atoms, or ions, through solids, liquids, gases, or free space; the term is usually used of relatively smooth movements of… … The Collaborative International Dictionary of English
Alfa Romeo Twin Spark engine — Infobox Automobile engine name=Alfa Romeo TwinSpark engine manufacturer=Alfa Romeo production=1986– type=DOHC 2/4 valve I4 predecessor=Alfa Romeo Twin Cam successor= displacement=1.4 L 1.6 L 1.7 L 1.8 L 2.0 L power = 76 kW (103 PS) 114 kW (155… … Wikipedia
radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining … Universalium
electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… … Universalium
Electrical discharge machining — An electrical discharge machine Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained … Wikipedia
electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… … Universalium
