en San Pedro Mártir, Baja California, Mexico https://www.instagram.com/p/ByvoUAIn8QM/?igshid=okrysg2df0na
he wasn't even looking at me and he found me
Mike Driver
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we're not kids anymore.
YOU ARE THE REASON
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Noah Kahan
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if i look back, i am lost
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@rhaegarus
en San Pedro Mártir, Baja California, Mexico https://www.instagram.com/p/ByvoUAIn8QM/?igshid=okrysg2df0na
One ring to rule them all. #valentineday https://www.instagram.com/p/Bt4l2LrDR89/?utm_source=ig_tumblr_share&igshid=gogbpsndvjpu
One ring to rule them all. #valentineday https://www.instagram.com/p/Bt4l2LrDR89/?utm_source=ig_tumblr_share&igshid=7ewx5au9nh0p
On the definition of Angular Momentum
Anonymous asked:
Why is it mr^2 omega and not some other weird formula that is conserved? Why not mr^3 omega or mr^2 omega^2 ?
This is a great question. And to be honest, there is no intuitive answer as to why it is defined this way or that.
What makes the definition special?
Conservation laws can be understood better through the Lagrangian formulation of classical mechanics.
That’s the conservation of momentum for a free particle. It means that this quantity mv remains constant with time (not m2v, not m2v2 ,just mv).
And similarly for a rotating body, one can find that the quantity that remains constant wrt time is the angular momentum.
And that’s the best rationale using modern physics that can be provided for why Angular momentum takes the form that it does.
Any other form would just not be conserved. Sure, you can construct a Lagrangian that would give you the form that you need but that would not represent anything physical !
Hope that answers your question. Thanks for asking !
** If you have not heard about Lagrangian formulation of classical mechanics, the wiki article on Principle of Least action is a really good place to start..
The principle of Least/Stationary action remains central in modern physics and mathematics, being applied in thermodynamics, fluid mechanics, the theory of relativity, quantum mechanics, particle physics, and string theory.
Extraño los besos que nunca me diste.
No me prometas nada. He visto en tus ojos los sueños y ambiciones que llevas. Tu cuerpo está aquí pero tu alma está allá.
Didier Mis.
Esta era un chica a la que conocí en un momento diferente a éste.
Cada vez que cierro la boca puedo sentir el sabor de la tuya.
Didier Mis.
Y te voy a extrañar. Lo único que tengo de ti es el recuerdo de tu reflejo en un día del mes de Abril.
Didier Mis
Recuerdo tus pequeñas manos. Blancas y lampiñas. Con dedos largos para tocar lo que quieren. De movimientos suaves y armónicos. No las puedo tocar ya, se desvanecen mientras cierro los ojos, y las vuelvo a recordar, esta vez con menos detalle.
Didier Mis.
Imagino que eres aquella chica de pómulos sobresalientes. Con los labios carmesí y un sonrisa hermosa. Sentada bajo el sol, rodeada de tantos desconocidos. Imagino lo hermosa que eres, pero no como en tus fotografías. Imagino que esta fue la forma en que te conocí, una mirada perdida dentro de una multitud. Eso es todo. Sin saludos ni despedidas.
Didier Mis.
Supe que te quería al abrazarte. Sentí que algo de mí se quedó en tus brazos después de soltarte.
Denise Márquez (via denisesoyletras)
Pienso que eres aquel chico detrás de la corneta. Quiero creer que esta fue la forma en que te conocí. Te vi una vez y nunca supe más de ti.
Didier Mis.
No sabes cuánto esperaba conocerte. No sabes todo lo que hago por encontrarte. No sabes cuánto hago por hacer que todo parezca una coincidencia. Y no sabes que aun así, no espero nada de ti.
Didier Mis.