Orodruin's latest activity
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Orodruin replied to the thread Undergrad Curl of velocity vector in rotational motion.No. It is a function of time as it changes with time, but it does not depend on spatial coordinates. If it did the object would... -
Orodruin replied to the thread Undergrad Black hole questions.That’s not starting from the singularity though 😉
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Orodruin replied to the thread Undergrad How does this configuration not create E field inside the conductor?.It is exactly what they should look like.
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Orodruin replied to the thread Undergrad Curl of velocity vector in rotational motion.By definition, ##\vec \omega## is constant is space - or you don’t have rotational motion. The curl does not contain derivatives wrt...
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Orodruin reacted to Vanadium 50's post in the thread Undergrad What keeps dark matter in galactic halos? with
Like.
Rephrasing: Wow! I don't think I have ever seen an interval of 6x1016 meters s between a message and its reply. -
Spin is a quantum mechanical property. It's intrinsic angular momentum which isn't literally a classical rotation at all. Take an...
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Orodruin replied to the thread Undergrad How can you model charge?.The previous reply is excellent, so I will just add that the role of physics as an empirical science is to describe how things work, not...
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Orodruin replied to the thread How is x-vt a rightward moving wave?.I’ll try to offer yet another perspective. The function ##f## describes the shape of the wave. We can consider a point on the wave with...
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Orodruin replied to the thread Vector calculus: line element dr in cylindrical coordinates.Because it was never there to start with. The position vector in cylinder coordinates is ##\vec r = \rho \hat \rho + z \hat k##, there...