tangential velocityphysics

Main

Aspects of this topic are discussed in the following places at Britannica.

Assorted References

  • tornadoes ( in tornado: Wind speeds and air pressures )

    ...wind speeds can occur in the corner region of a tornado. The few measurements of violent tornado winds that have been made using Doppler radar and photogrammetry suggest that the maximum possible tangential wind speeds generated by tornadoes are in the range of 125 to 160 metres per second, or 450 to 575 km per hour (about 410 to 525 feet per second, or 280 to 360 miles per hour). Most...

calculation of

  • luminosity function ( in Milky Way Galaxy: The stellar luminosity function )

    ...motion and apparent magnitude; this yields a statistical sample of stars of approximately known and uniform distance. The fourth method involves examining the distribution of proper motions and tangential velocities (the speeds at which stellar objects move at right angles to the line of sight) of stars near the Sun.

  • orbits ( in mechanics: Circular orbits )

    ...are expressed quantitatively, an understanding of why a force is needed to maintain a body in an orbit of constant speed is useful. The reason is that, at each instant, the velocity of the planet is tangent to the orbit. In the absence of gravity, the planet would obey the law of inertia (Newton’s first law) and fly off in a straight line in the direction of the velocity at constant speed. The...

  • stellar motion ( in star: Stellar motions )

    ...proper motion. The amount of proper motion, denoted by μ (in arc seconds per year), divided by the parallax of the star and multiplied by a factor of 4.74 equals the tangential velocity, VT, in kilometres per second in the plane of the celestial sphere.

Citations

MLA Style:

"tangential velocity." Encyclopædia Britannica. 2008. Encyclopædia Britannica Online. 22 Nov. 2008 <http://www.britannica.com/EBchecked/topic/582495/tangential-velocity>.

APA Style:

tangential velocity. (2008). In Encyclopædia Britannica. Retrieved November 22, 2008, from Encyclopædia Britannica Online: http://www.britannica.com/EBchecked/topic/582495/tangential-velocity

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