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angular momentum
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angular momentum
noun Physics.
the product of the moment of inertia of a body about an axis and its angular velocity with respect to the same axis.
Also called moment of momentum.
Origin:
1865–70
1865–70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source
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Angular momentum
is always a great word to know.
So is radiant energy. Does it mean:
| a longitudinal wave in an elastic medium, especially a wave producing an audible sensation |
| energy transmitted in wave motion, especially electromagnetic wave motion |
Collins
World English Dictionary
| angular momentum | |
| —n | |
| 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 | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
angular momentum  (āng'gyə-lər) Pronunciation Key
A measure of the momentum of a body in rotational motion. The angular momentum of rigid bodies is conserved; thus, a spinning sphere will continue to spin unless acted on by an outside force. Changes in angular momentum are equivalent to torque. In classical mechanics, angular momentum is equal to the product of the angular velocity of the body and its moment of inertia around the axis of rotation. It is a vector quantity; the vector points up along the axis of counterclockwise rotation. In quantum mechanics, the angular momentum of a physical system is quantized and can only take on discrete values. See also Planck's constant, spin. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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