• The velocity factor (VF), also called wave propagation (relative) speed or (relative) velocity of propagation (VoP or v P {\displaystyle v_{\mathrm {P}...
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  • V {\displaystyle V} : velocity of the fluid. g {\displaystyle g} : acceleration due to gravity. However, the friction factor f was expressed by Weisbach...
    40 KB (5,142 words) - 14:09, 23 April 2025
  • corresponding Lorentz factor, the final is the reciprocal. Values in bold are exact. There are other ways to write the factor. Above, velocity v was used, but...
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  • travels at a constant phase velocity along its length, while in ordinary cable phase velocity may vary. The velocity factor V F {\displaystyle {\mathit...
    45 KB (5,383 words) - 02:13, 19 April 2025
  • Thumbnail for Velocity
    Velocity is a measurement of speed in a certain direction of motion. It is a fundamental concept in kinematics, the branch of classical mechanics that...
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  • Thumbnail for Speed of light
    time dilation factor of γ = 2 occurs at a relative velocity of 86.6% of the speed of light (v = 0.866 c). Similarly, a time dilation factor of γ = 10 occurs...
    140 KB (14,707 words) - 09:33, 19 April 2025
  • Thumbnail for Coaxial cable
    is polytetrafluoroethylene; ASP is air space polyethylene VF is the Velocity Factor; it is determined by the effective ϵ r {\displaystyle \epsilon _{r}}...
    76 KB (7,766 words) - 07:01, 28 April 2025
  • Thumbnail for Proper velocity
    to an object's energy as well. Proper velocity w can be related to the ordinary velocity v via the Lorentz factor γ: w = d x d t d t d τ = v γ ( v ) {\displaystyle...
    21 KB (2,600 words) - 16:59, 16 March 2025
  • Thumbnail for Wave
    equations Shive wave machine Sound Standing wave Transmission medium Velocity factor Wave equation Wave power Wave turbulence Wind wave Wind wave#Formation...
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  • nanosecond per 15 centimetres (5.9 in). See also radio propagation, velocity factor, signal velocity and mechanical wave. Logic gates can have a gate delay ranging...
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  • Front velocity Phase velocity Propagation delay Time of flight Velocity factor Dielectric constant Brillouin, Léon. Wave propagation and group velocity. Academic...
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  • Thumbnail for Muzzle velocity
    000 ft/s). Several factors, including the type of firearm, the cartridge, and the barrel length, determine the bullet's muzzle velocity. For projectiles...
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  • relativity, a four-velocity is a four-vector in four-dimensional spacetime that represents the relativistic counterpart of velocity, which is a three-dimensional...
    10 KB (1,711 words) - 01:50, 24 November 2024
  • Thumbnail for Electric current
    electromagnetic wave to the speed of light in free space is called the velocity factor, and depends on the electromagnetic properties of the conductor and...
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  • Thumbnail for Group velocity
    The group velocity of a wave is the velocity with which the overall envelope shape of the wave's amplitudes—known as the modulation or envelope of the...
    25 KB (3,518 words) - 12:56, 29 April 2025
  • Shear velocity, also called friction velocity, is a form by which a shear stress may be re-written in units of velocity. It is useful as a method in fluid...
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  • Thumbnail for Escape velocity
    In celestial mechanics, escape velocity or escape speed is the minimum speed needed for an object to escape from contact with or orbit of a primary body...
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  • 200,000 km/s for most fiber or electrical media, depending on their velocity factor). This approximately means an additional millisecond round-trip delay...
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  • Thumbnail for Nerve conduction velocity
    nerve conduction velocity (CV) is the speed at which an electrochemical impulse propagates down a neural pathway. Conduction velocities are affected by...
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  • Thumbnail for Refractive index
    Prism-coupling refractometry Velocity factor One consequence of the real part of n being less than unity is that it implies that the phase velocity inside the material...
    82 KB (9,198 words) - 12:45, 9 May 2025
  • Thumbnail for Q factor
    on the pendulum per unit velocity. The design of a high-energy (near terahertz) gyrotron considers both diffractive Q-factor, Q D ≈ 30 ( L λ ) 2 {\textstyle...
    33 KB (3,943 words) - 05:48, 14 May 2025
  • Mathematically, the Slip factor denoted by 'σ' is defined as the ratio of the actual & ideal values of the whirl velocity components at the exit of the...
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  • Thumbnail for Speed of sound
    missing the factor of γ but was otherwise correct. Numerical substitution of the above values gives the ideal gas approximation of sound velocity for gases...
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  • Thumbnail for Velocity of money
    The velocity of money changes over time and is influenced by a variety of factors. Because of the nature of financial transactions, the velocity of money...
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  • Thumbnail for Power factor (shooting sports)
    mass and velocity), which to some degree reflects the recoil impulse from the firearm onto the shooter (see section on limitations). Power factor is used...
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  • Thumbnail for Expansion of the universe
    The peculiar velocities of nonrelativistic particles decay as the universe expands, in inverse proportion with the cosmic scale factor. This can be understood...
    37 KB (4,556 words) - 22:16, 22 March 2025
  • Ultraviolet catastrophe Undertow (wave action) Underwater wave Undular bore Velocity factor Vestigial-sideband modulation Vibrating string Voltage standing wave...
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  • Momentum is the speed or velocity of price changes in a stock, security, or tradable instrument. The Monthly Momentum Factor (MOM) can be calculated by...
    5 KB (796 words) - 06:41, 17 December 2024
  • be calculated using Chapman-Jouguet theory from the velocity and density. TNT equivalent RE factor Cooper, Paul W. (1996). Explosives Engineering, New...
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  • Thumbnail for Electromagnetic radiation
    lower velocity v {\displaystyle v} , given by a dimensionless parameter between 0 and 1 characteristic of the medium called the velocity factor V F {\displaystyle...
    85 KB (10,022 words) - 21:32, 14 May 2025