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overall characteristic length

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  • Classical guitar — A modern classical guitar from the front and side String instrument Hornbostel–Sachs classification 321.322 5 (Composite chordophone sounded by the bare fingers or …   Wikipedia

  • Turbulence — In fluid dynamics, turbulence or turbulent flow is a fluid regime characterized by chaotic, stochastic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and velocity in space and… …   Wikipedia

  • Reynolds number — In fluid mechanics and heat transfer, the Reynolds number mathrm{Re} is a dimensionless number that gives a measure of the ratio of inertial forces ({old mathrm V} ho) to viscous forces (mu / L) and, consequently, it quantifies the relative… …   Wikipedia

  • Space tether — Artist s conception of satellite with a tether Space tethers are cables, usually long and very strong, which can be used for propulsion, stabilization, or maintaining the formation of space systems by determining the trajectory of spacecraft and… …   Wikipedia

  • Globular cluster — s from the Sun and contains hundreds of thousands of stars. [cite news coauthors =The Hubble Heritage team url = http://hubblesite.org/newscenter/newsdesk/archive/releases/1999/26/ title = Hubble Images a Swarm of Ancient Stars work = HubbleSite… …   Wikipedia

  • Tether propulsion — systems are proposals to use long, very strong cables (known as tethers) to change the velocity of spacecraft. The tethers may be used to initiate launch, complete launch, or alter the orbit of a spacecraft. Spaceflight using this form of… …   Wikipedia

  • Plasma scaling — The parameters of plasmas, including their spatial and temporal extent, vary by many orders of magnitude. Nevertheless, there are significant similarities in the behaviors of apparently disparate plasmas. It is not only of theoretical interest to …   Wikipedia

  • Astrophysical plasma — An astrophysical plasma is a plasma (an ionized gas) the physical properties of which are studied as part of astrophysics. Much of the baryonic matter of the universe is thought to consist of plasma, a state of matter in which atoms and molecules …   Wikipedia

  • Churchill-Bernstein Equation — In convective heat transfer, the Churchill Bernstein equation is used to estimate the surface averaged Nusselt number for a cylinder in cross flow at various velocities. [Some examples of said system can be seen here: Cite web | publisher =… …   Wikipedia

  • Churchill–Bernstein equation — In convective heat transfer, the Churchill–Bernstein equation is used to estimate the surface averaged Nusselt number for a cylinder in cross flow at various velocities.[1] The need for the equation arises from the inability to solve the… …   Wikipedia

  • Bazooka (instrument) — The bazooka is a rare, novelty brasswind musical instrument which is several feet in length and incorporates telescopic tubing like the trombone. Often, bazookas are very simply constructed with scavenged materials like pipes and funnels. From… …   Wikipedia

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