请输入您要查询的英文单词:

 

单词 angular momentum
释义

angular momentum


angular momentum

n.1. The vector product of the position vector (from a reference point) and the linear momentum of a particle.2. The vector sum of the angular momentums of each infinitesimal component particle of an extended body.

angular momentum

n (Mathematics) a property of a mass or system of masses turning about some fixed point; it is conserved in the absence of the action of external forces

an′gular momen′tum


n. the product of the moment of inertia of a body about an axis and its angular velocity with respect to the same axis. [1870–75]

an·gu·lar momentum

(ăng′gyə-lər) A quantity used to measure the motion of a body that is moving in a circle. The angular momentum depends on the mass and velocity of the body, and on the radius of the circle that it is moving along. Because the velocity of a body moving in a circle is always changing (since velocity is speed and direction), its angular momentum is also always changing.
Thesaurus
Noun1.angular momentum - the product of the momentum of a rotating body and its distance from the axis of rotationangular momentum - the product of the momentum of a rotating body and its distance from the axis of rotation; "any rotating body has an angular momentum about its center of mass"; "angular momentum makes the world go round"momentum - the product of a body's mass and its velocity; "the momentum of the particles was deduced from meteoritic velocities"
Translations

angular momentum


angular momentum

MRI
The cross product of the ordinary momentum of a particle and its position vector, running from the axis of rotation to the body whose momentum is being determined.
In absence of external forces, the angular momentum (AM) remains constant; therefore, a rotating body tends to maintain the same axis of rotation. When torque is applied to a rotating body, the resulting change in AM results in precession. Momentum involved in the rotation of a body about an axis is conserved, as is ordinary momentum. Atomic nuclei possess an intrinsic AM known as “spin”, which is measured in multiples of Planck’s constant.

an·gu·lar mo·men·tum

(ang'gyŭ-lăr mō-men'tŭm) The spin of MR active nuclei, which depends on the balance between the number of protons and neutrons in the nucleus.
FinancialSeeMomentum

angular momentum


  • noun

Words related to angular momentum

noun the product of the momentum of a rotating body and its distance from the axis of rotation

Related Words

  • momentum
随便看

 

英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/24 9:15:15