Search results

...ar speed and tangential speed are used interchangeably, and both use units of m/s, km/h, and others. ...rate of rotation, or the same number of rotations or revolutions per unit of time. It is common to express rotational rates in revolutions per minute (R ...

{{Short description|Amount of energy transferred or converted per unit time}} ...66118b0 |bibcode=1902Natur..66R.118. |quote=If the watt is assumed as unit of activity... |doi-access=free}}</ref> Power is a [[Scalar (physics)|scalar]] ...

{{Short description|Flow rate of water that is transported through a given cross-sectional area}} ...scharge Measurements at Gaging Stations: U.S. Geological Survey Techniques of Water-Resources Investigations, Book 3, Chapter A8, p. 1.]</ref> It include ...

{{Short description|Magnitude of velocity}} {{About|the property of moving bodies|other uses|Speed (disambiguation)}} ...

...s [[Pratt & Whitney F135]] jet engine, which produces {{cvt|43,000|lbf|N}} of thrust.]] ...rates]] [[mass]] in one direction, the accelerated mass will cause a force of equal [[magnitude (vector)|magnitude]] but opposite direction to be applied ...

...antaneous phase''' (also known as '''local phase''' or simply '''phase''') of a ''complex-valued'' function ''s''(''t''), is the real-valued function: The '''instantaneous frequency''' is the [[temporal rate of change]] of the instantaneous phase. ...

...ght|200px|The [[English longbow]] – a simple but very powerful spring made of [[European Yew|yew]], measuring {{cvt|2|m}} long, with a {{cvt|105|lbf|N|or ...g.jpg|thumb|A machined spring incorporates several features into one piece of bar stock|180x180px]] ...

{{Short description|Rate at which electrical energy is transferred by an electric circuit}} ...es apply to watts as with other SI units: thousands, millions and billions of watts are called kilowatts, megawatts and gigawatts respectively. ...

...elope (waves)|''envelope'']] of a ''[[wave packet]]'', a "pack" or "group" of oscillations centered around one frequency that travel together, formed for ...the ideal case of a constant group delay across the entire frequency range of a [[bandlimited]] signal and flat frequency response, the waveform will exp ...

...veform in quick succession and reconstructing the phasor quantity, made up of an angle measurement and a magnitude measurement. The resulting measurement ...considered to be one of the most important measuring devices in the future of power systems.<ref>{{cite journal ...

{{Short description|Order of the past, present, and future}} '''Time''' is the continued [[sequence]] of [[existence]] and [[event (philosophy)|events]] that occurs in an apparentl ...

{{Short description|Dimensionless number that quantifies the strength of the electromagnetic interaction}} ! Approximate value of {{mvar|α}} ...

...[[Electronic component|components]]. '''Network analysis''' is the process of finding the [[voltage]]s across, and the [[Electric current|current]]s thro ...e with two or more [[terminal (electronics)|terminal]]s into which, or out of which, current may flow. ...

...of [[Paris]] can measure [[time]] as well as demonstrate the [[rotation]] of [[Earth]].]] ...complex of technological and scientific issues, and part of the foundation of ''[[recordkeeping]]''. ...

{{Short description|Influence that can change motion of an object}} ...ortant, force is a [[Vector (geometric)|vector]] quantity. The [[SI unit]] of force is the [[newton (unit)|newton (N)]], and force is often represented b ...

...[three-dimensional space|three dimensions of space]] and the one dimension of [[time]] into a single [[four-dimensional]] [[continuum (measurement)|conti ...ith the [[Lorentz transformation]] and [[Special relativity|special theory of relativity]]. ...

{{Short description|Study of the propagation of sound in water}} [[Image:SCM4 fig11.jpg|thumb|right|300px|Output of a computer model of underwater acoustic propagation in a simplified ocean environment.]] ...

{{Short description|Speed of sound wave through elastic medium}} ...|F/A-18 Hornet]] displaying rare localized condensation breaking the speed of sound]] ...

{{Short description|Conversion of energy from sunlight into electricity}} ...ectricity|a broader range of human uses for sunlight|Solar energy|the unit of light from stars and galaxies|Solar luminosity}} ...

| caption = The [[Hubble Ultra-Deep Field]] image shows some of the most remote [[Galaxy|galaxies]] visible to present technology (diagonal | label1 = [[Age of the universe|Age]] (within [[Lambda-CDM model|ΛCDM model]]) ...