It all started as a joke, when I got upset about no longer being the one true Jim and someone mentioned that everyone should change there name to a Jim name when I left the room. Spiraled from there to me being Jimdalf the Grey last month because of another comment I made.... yadda yadda..... I am the Lord your Jim!
To explain a point on this question, I made a video at screenr.com and linked to it.
I tried to use object/embed markup, but it was just ignored, which is a good thing because it would not be a safe solution.
But it would be nice if Stack Exchange found a safe and easy way for users to create q...
@GlenTheUdderboat We don't want to rely on embedded YouTube videos because we have no control over whether or not they are taken down. We want all needed information to be found in the post itself here, which means not relying on a video or image hosted somewhere else.
As a layman, most of my understanding of Einstein's gravity comes from simple analogies, such as the "BOWLING BALL ON TRAMPOLINE" example, or alternatively the "ANT ON BOWLING BALL" example. While these analogies are great at explaining how the paths of moving objects can be altered by warped spa...
@J.Musser I can't do that! Not without letting the community vote on the new one first. I would have changed it had they chosen Jim the Enchanter as my name
@Jimnosperm "the formula" is remarkably difficult to put into a few short words but, once recognized for what it is, it is easy to detect. Essentially, it involves getting the victim to accept an unearned guilt, the 'guilt' of having offended (humiliated, etc.) another. Your discovery that no one can offend you unless you choose to let them do so is your inoculation against "the formula".
@0celo7 I've given up on understanding single upvotes in any case. My threshhold for "what the hell happened here?" is somewhere around five votes now, I think
@0celo7 Just answer some questions which don't require you to do derivations at all. If I only answered technical questions, I'd have far less reputation.
Is all stories. We live in a mostly non-linear mathematical world and most of our models/theories are linear. Fuzzy logic, FCM's are more appropriate in resolving complex issues. The math stories are usually easier to verify as to truth. No so for physics, except for the math parts.
@Jiminion Not if the user is of high ranking on the site. If the loss of rep from them would be widespread and great, the system leaves it. Otherwise rep is reversed
@Jiminion Your question makes no sense. I don't know what you're asking
@Jimnosperm It probably makes no sense for several reasons. One reason it makes no sense if one believes that infinite space is already 'there' and doesn't need to be created. I've read that many now believe that, but there was also a belief that mass/energy define spacetime with its presence.
@0celo7 I do remember wanting to comment but not being able. Know how I handled it? I said to myself "I can't comment without 50 rep? I'm going to work hard to get 50 rep ASAP so that I can comment everywhere"
I didn't try to circumvent the obviously designed system, because I knew that ignoring the rules of the system disrespects the people that support that system, and that wouldn't go over well
@Jiminion no, the most confusing part is the "Is there any evidence that this expansion has a retarding force on the expansion?"
The rest is the product of misunderstandings
@Jiminion don't listen to that answer. Gravity isn't considered a force so much as it is the curvature of spacetime at that scale. And, while it does cause the deceleration of expansion, it also causes the acceleration of the expansion. So calling it the retarding force is not even wrong
@Jimnosperm I agree that one should work to get 50 rep instead of doing what that guy did. I won't accept that answer, but I gave him an uptick to now he has 50 rep!
Gravity isn't a force? And I don't think weak force is really a force. So that leaves EM and strong.....
@Jiminion So what you did was artificially and undeservingly inflate his rep so that the intentional ban on new users posting comments didn't apply to him? Why have the ban in the first place if you just help him cheat the system?
The 50 rep limit prevents trolling, thank you comments, chattiness, etc, etc. All manner of unwanted commenting is reduced by the 50 rep minimum
@ChrisWhite I think that's probably because not many of us are playing that game
Also, when I went after some chat flag, I discovered that some of the codegolfers seem to have a scheme to go on other sites and make deleterious decisions for them.
@0celo7 Because many laymen questions tend to be about the weirdness of the double slit/QM in general or similar, and because more students have trouble with Hilbert spaces and bras and kets and wavefunctions than with mechanics, I think.
The Stack Overflow instance in particular seems pretty poor. How should it be done to achieve the best performance? How is there such a difference between different sites?
I was going to migrate this to Meta, but then realized that it's technically a question about a video game AND about our engine, so it's on-topic for either. :) — Jaydles ♦5 hours ago
Many times I was sitting in a train, watching closely nearby people.
If the vehicle changes it's movement rapidly (brakes, turns, etc), then obviously, people feel the inertial pseudo-force that might even make them fall. They don't fall, however, since by the power of their muscles they keep th...
@0celo7 Of course it feels confining and awkward and, as you say, wrong. But it is an absolutely necessary protection against a large class of low-effort trolls so there is no help for it. We need it to leave us enough time to deal effectively with the high-effort trolls.
@ACuriousMind hey, btw I came across sth that may interest you, by E. Witten, he talks about how you can define path integrals as a trace without the vector space, here's the talk
And a quote from it (near end): "well there isn't a vector space here there's only an algebra, you see..., what we computed here, ... something that has all the algebraic properties of a trace but may not be a trace is equivalent to having a deformation of algebra of observables without the space that it acts on, other than itself."
I was puzzled my a question my colleague asked me, and now seeking your help.
Suppose you and your friend* end up on a big sphere. There are no visual cues on where on the sphere you both are, and the sphere is way bigger than you two. There is no means of communication. You can determine your r...
@0celo7 Yes yes, I got it. I'm still confused about the Christoffel symbols though. See the problem is, I can't figure out how the indices are supposed to work in the definition of the Levi-Civita connection. $$\partial_k g_{rj} + \partial _j g_{rk} - \partial _r g_{jk}$$ and I just don't get how this is supposed to work. Are $k,r,j \in \lbrace t,r,\phi,\theta\rbrace$? If that's it, then I get it. Otherwise, I'm confused why we have different indices.
So I used this modified formula I found on this website.
My notation is early Latin for abstract indices, middle latin for spatial indices in physics, middle latin for all indices in pure math, early Greek for tetrad, middle Greek for spacetime, capital Latin for spinors.
@Danu The "removing infinities" probably is, but the Wilsonian picture of renormalizing to get effective theories at certain energy levels has nothing to do with this, I think.
I've said it before: It's so shitty that my grad school refuses to do more advanced courses on topics that are also treated in undergraduate degrees at a more basic level.