angular momentum

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Related to angular momentums: Rotational 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.
References in periodicals archive ?
Finally, the change of the angular momentum of the concerned mechanical system during dt can be represented as the sum of dL
Integrating the obtained equation and using the principle of conservation of angular momentum, we can find the main external forces momentum that impede the movement of the motor vehicle
The total change in the angular momentum [M.sup.E] can be represented as
Sjoholm et al., "Utilization of photon orbital angular momentum in the low-frequency radio domain," Physical Review Letters, vol.
Bergman et al., "Orbital angular momentum in radio--a system study," IEEE Transactions on Antennas and Propagation, vol.