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Orodruin's latest activity
Orodruin
replied to the thread
Damped harmonic oscillation
.
Yes, those are vectors, but they are the (coordinate) components of the resultant in the given coordinate system only.
May 18, 2024
Orodruin
replied to the thread
Damped harmonic oscillation
.
So you do not see a problem with an alleged vector changing magnitude under rotations etc?
May 17, 2024
Orodruin
reacted to
Drakkith's post
in the thread
I
Did Feynman make a mistake in the drawing of moving charges?
with
Like
.
No, the diagram is clearly labeled, showing that E1 points left from q1 (the left arrow labeled q1E1), while the right arrow from q2 is...
May 17, 2024
Orodruin
replied to the thread
Wordle Lovers - Play the NYT Daily Game
.
Wordle 1 064 5/6 ⬜⬜🟩⬜⬜ 🟨⬜🟨⬜⬜ ⬜🟩🟩⬜🟩 ⬜🟩🟩⬜🟩 🟩🟩🟩🟩🟩 3 words with distinct unknown letters after 2 guesses. For once I thought ”let’s go...
May 17, 2024
Orodruin
replied to the thread
Damped harmonic oscillation
.
Now consider what happens to those when you change your coordinates? Edit: See also eg...
May 17, 2024
Orodruin
replied to the thread
Continuous functions on metric spaces
.
Even without that, it should be pretty clear that a pointwise sum of continuous functions is a continuous function. All of the vector...
May 17, 2024
Orodruin
replied to the thread
I
What are Killing vectors?
.
Yes, indeed. Fixing.
May 17, 2024
Orodruin
replied to the thread
I
What are Killing vectors?
.
To put this into context, the Killing condition ##\mathcal L_K g = 0## may be rewritten $$ \nabla_\mu K_\nu + \nabla_\nu K_\mu = 0 $$ It...
May 17, 2024
Orodruin
replied to the thread
Continuous functions on metric spaces
.
The first inequality is incorrect.
May 17, 2024
Orodruin
replied to the thread
Damped harmonic oscillation
.
Again, the component of a vector is not a vector. This is all very standard notation in one-dimensional problems.
May 17, 2024
Orodruin
replied to the thread
Damped harmonic oscillation
.
You put a vector sign on one quantity and you need to put it on all quantities. If not it is certainly not doing things appropriately...
May 17, 2024
Orodruin
replied to the thread
I
Can there be structures made from neutrinos with angular momentum?
.
No, I think your interpretation of it is wrong. It is talking about the large scale structure formation, not about structures made of...
May 17, 2024
Orodruin
replied to the thread
Damped harmonic oscillation
.
I don’t have access to the book, but I would presume that all of the definitions are in it. In particular in section 3.6, which is...
May 17, 2024
Orodruin
reacted to
Vanadium 50's post
in the thread
I
Can there be structures made from neutrinos with angular momentum?
with
Like
.
It sounds like you aren't asking a question, you are arguing a position. If your new question is "if a trillion trillion years from now...
May 17, 2024
Orodruin
replied to the thread
Continuous functions on metric spaces
.
You want to find a ##\delta## such that if ##||f-g|| = \sup_{x \in I}|f(x)-g(x)| < \delta## then ##|\phi(f) - \phi(g)|< \varepsilon##...
May 17, 2024
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