Velocity — In physics, velocity is defined as the rate of change of position. It is a vector physical quantity; both speed and direction are required to define it. In the SI (metric) system, it is measured in meters per second: (m/s) or ms 1. The scalar… … Wikipedia
Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… … Wikipedia
velocity — /veuh los i tee/, n., pl. velocities. 1. rapidity of motion or operation; swiftness; speed: a high wind velocity. 2. Mech. the time rate of change of position of a body in a specified direction. 3. the rate of speed with which something happens;… … Universalium
Velocity of money — Chart showing the log of US M2[1][2] money velocity (green), calculated by dividing nominal GDP by M2 stock, M1 plus time deposits. M2 velocity is not stable and correlates with the Employment Population ratio (blue), an indicator of economic… … Wikipedia
Time-of-flight — The time of flight (TOF) describes the method used to measure the time that it takes for a particle, object or stream to reach a detector while traveling over a known distance. In time of flight mass spectrometry, ions are accelerated by an… … Wikipedia
velocity of circulation — the average number of times that a unit of currency circulates during a given period of time : the rate of turnover of money * * * velocity of circulation noun (economics) The ratio between the value of a country s national product and the money… … Useful english dictionary
Average Wind Speed — (or Velocity) The mean wind speed over a specified period of time … Energy terms
Critical ionization velocity — experiment onboard space shuttle Discovery (STS 39), releasing a plume of nitrous oxide gas. Full text Critical ionization velocity (CIV, also called Critical velocity, CV) is the relative v … Wikipedia
Residence time — is a broadly useful concept that expresses how fast something moves through a system in equilibrium. It is the average time a substance spends within a specified region of space, such as a reservoir. For example, the residence time of water… … Wikipedia
Relaxation time — is a general concept in physics for the characteristic time in which a system changes to an equilibrium condition from a non equilibrium condition. It can measure the time dependent response of a system to well defined external stimuli.… … Wikipedia