speed-length ratio

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• speed-length ratio — noun : the ratio of a ship s speed in knots divided by the square root of her length in feet …   Useful english dictionary

• Hull speed — Hull speed, sometimes referred to as displacement speed, is the speed of a boat at which the bow and stern waves interfere constructively, creating relatively large waves, and thus a relatively large value of wave drag. Though the term hull speed …   Wikipedia

• Length contraction — Length contraction, according to Hendrik Lorentz, is the physical phenomenon of a decrease in length detected by an observer in objects that travel at any non zero velocity relative to that observer. This contraction (more formally called Lorentz …   Wikipedia

• Speed of light — The speed of light in the vacuum of free space is an important physical constant usually denoted by the letter c . [NIST and BIPM practice is to use c 0 for the speed of light in vacuum in accord with international standard ISO 31 5. See… …   Wikipedia

• Speed of sound — Sound is a vibration that travels through an elastic medium as a wave. The speed of sound describes how much distance such a wave travels in a certain amount of time. In SI Units with dry air at 20 °C (68 °F), the speed of sound is 343 m/s. This… …   Wikipedia

• speed — speedful, adj. speedfully, adv. speedfulness, n. speedingly, adv. speedingness, n. speedless, adj. /speed/, n., v., sped or speeded, speeding. n. 1. rapidity in moving, going, traveling, proceeding, or performing; swiftness; celerity: the …   Universalium

• Speed — This article is about the property of moving bodies. For persons named Speed, see Speed (name). For the film, see Speed (1994 film). For other uses, see Speed (disambiguation). Classical mechanics …   Wikipedia

• Ratio — This article is about the mathematical concept. For the Swedish institute, see Ratio Institute. For the academic journal, see Ratio (journal). For the philosophical concept, see Reason. For the legal concept, see Ratio decidendi. The ratio of… …   Wikipedia

• speed — [[t]spid[/t]] n. v. sped speed•ed, speed•ing 1) rapidity in moving, traveling, performing, etc.; swiftness 2) relative rate of motion or progress: the speed of light[/ex] 3) aum a gear ratio in a motor vehicle or bicycle 4) pht a) the sensitivity …   From formal English to slang

• focal ratio — noun the ratio of the focal length to the diameter of a (camera) lens system • Syn: ↑f number, ↑stop number, ↑speed • Hypernyms: ↑ratio * * * noun : f number …   Useful english dictionary

• Stroke ratio — In a reciprocating piston engine, the stroke ratio, defined by either bore/stroke ratio or stroke/bore ratio, is a term which is used to describe the ratio between the diameter of the cylinder bore and the length of the piston stroke within its… …   Wikipedia