fiftyeight

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visits	member for	1 year, 5 months
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	336 reputation	bio	website		visits	member for	1 year, 5 months
18 badges		location			seen	May 13 at 9:14

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Mar 17	awarded	Popular Question
Dec 19	awarded	Yearling
Dec 5	accepted	Covariant derivative and Leibniz rule
Nov 21	awarded	Popular Question
Jul 31	comment	Covariant derivative and Leibniz rule OK thank you, last thing if I may, I don't really understand why $u^j$ here is a scalar, from what I know scalar are objects which do not transform when changing coordinates. doesn't $u^j$ transform as a contravariant vector?
Jul 31	comment	Covariant derivative and Leibniz rule Another reason why that definition makes sense to me is that on the first derivation I displayed, it seems like the covariant derivative acts like the regular derivative when acting on $u^j$, just like you wrote in answer 1, I don't understand why this is, I don't understand what you mean by $u^j$ is a "non-specific component"
Jul 31	comment	Covariant derivative and Leibniz rule about question 2, it was online on a video lecture, which I won't make you sit through unless you're interested, by I also saw it on a forum post on Physics forum while searching for an answer for this on google, here's the post: physicsforums.com/showpost.php?p=3991829&postcount=3
Jul 30	revised	Covariant derivative and Leibniz rule edited body
Jul 30	asked	Covariant derivative and Leibniz rule
Jun 21	revised	Recommendations for Statistical Mechanics book added 4 characters in body
Jun 21	asked	Recommendations for Statistical Mechanics book
Jun 21	accepted	What does it mean that particles are the quanta of fields?
Jun 21	accepted	Is the gravity we feel in our everyday life mainly curvature of the time coordinate?
May 24	accepted	Conservation of Energy in Special Relativity
May 21	asked	Is the gravity we feel in our everyday life mainly curvature of the time coordinate?
May 21	asked	What does it mean that particles are the quanta of fields?
May 12	awarded	Critic
May 11	accepted	Curvature of spacetime in only required to explain tidal forces?
May 11	asked	Conservation of Energy in Special Relativity
May 7	comment	Curvature of spacetime in only required to explain tidal forces? great answer, thank you, one clarification if I may: In the case of Me and You standing on Earth, once the forces of the floor acting on my feet have given me some acceleration and deviated me from my geodesic, am I not on a new geodesic now through spacetime in which I am just floating above the floor. What I mean is I don't understand why the forces of the floor need to keep accelerating me all the time, because usually once a force have acted for some time you can stop the force and the object will keep moving in an inertial way.