four-force

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four-force [¦fȯr ¦fȯrs]

(relativity)

A four-vector equal to the product of the rest mass of a particle and the rate of change of its four-momentum with respect to its proper time.

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No references found			He added: "It is 99 per cent certain we will be involved in a four-force merger. Police to press on with new pounds 9m HQ by Coventry Evening Telegraph (England) He added: "It is 99 per cent certain we will be involved in a four-force merger. Police to press on with new pounds 9m HQ; FORCES MERGER: Public ... by Coventry Evening Telegraph (England) The four-force plan is also backed by the West Midlands Police Authority, but Diane Holl-Allen, who chairs the authority, said she has major concerns about the financing of the proposed changes. 'Superforce' will not hit local policing says chief; MERGER: West ... by Coventry Evening Telegraph (England)			Four Hundred, Council of the Four Lakes four laws of black hole mechanics Four Mile Creek State Park Four Noble Truths Four Thirds system four-address four-ball tester Four-Bar Linkage four-by-four four-centered arch four-centered pointed arch four-channel sound system four-color printing Four-Color Problem four-color process four-color separation process four-colour glossies four-colour map problem four-course radio range station four-crib barn four-current density Four-Cycle Engine four-degree calorie four-factor formula four-force four-frequency diplex telegraphy four-group Four-H clubs Four-Horned Antelope four-hundred-day clock four-in-hand four-layer device four-layer diode four-layer transistor four-leaf four-leaved flower four-level laser four-limbed core four-o'clock four-over-four four-part vault four-phase modulation four-pi counter four-piece butt match four-piece butt matching four-piece set four-plus-one address four-point four-point bearing four-pole double-throw			Four-dimensional space Four-dimensional space Four-dimensional sphere Four-Dimensional Trellis Encoder Four-Dimensional Variational Data Assimilation four-door Four-Electrode Impedance Measurements Four-Engine Aircraft four-engined four-eyed four-eyed fish four-eyed fish four-eyes four-factor formula Four-field crop rotation Four-field crop rotation Four-field system Four-field system four-figure four-flush four-flushed four-flusher four-flushers four-flushes four-flushing four-fold four-footed four-footed butterfly four-force four-four time four-frequency diplex telegraphy four-group Four-H Club Four-H clubs Four-H Youth Development Four-handed four-handed dentistry four-handed dentistry four-handed dentistry Four-handed ones four-hitter Four-horned Four-horned Antelope four-hundred-day clock four-hundredth four-in-hand four-in-hand four-in-hand Four-in-hand knot Four-in-hand knot Four-in-hand knot four-in-hands four-in-hands four-in-hands four-lane four-lane highway four-layer device four-layer diode four-layer transistor

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