meta user
network profile
| bio | website | |
|---|---|---|
| location | United Kingdom | |
| age | ||
| visits | member for | 2 years, 3 months |
| seen | 6 hours ago | |
| stats | profile views | 494 |
To whom it may concern:
Please, leave a certain user alone that used to regularly post on Physics Stack Exchange. Stop whining and crying about it, and act your chronological rather than your social age. The site is doing just fine without him, and new stars will always appear to replace the old ones. The site is meant for users of all levels from highschool to research level, so it's not being downgraded at all--unless you want it to be a physics equivalent of Math Over Flow.
If you find the place too painful and unhealthy then just leave. No one particularly cares about you, anymore than they do about me or anyone else. It's just a place where people can ask and answer physics questions.
OK? Good. May your time be filled with lashings of physics, topped with more physics delights. Have a nice day :)
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May 19 |
comment |
In coordinate-free relativity, how do we define a vector? @BenCrowell yes, you have the freedom to choose a coordinate axis along some standard unit vector, if you wish. But you don't have to. |
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May 19 |
revised |
In coordinate-free relativity, how do we define a vector? improve clarity from comments. |
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May 19 |
comment |
In coordinate-free relativity, how do we define a vector? @BenCrowell You take any vector as a standard, and use that to define the magnitude and direction of all other vectors. Changing the coordinates won't change how this standard unit vector gives a value to the magnitude and direction of all other vectors. |
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May 19 |
answered | In coordinate-free relativity, how do we define a vector? |
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May 3 |
accepted | Can electromagnetic momentum be introduced at pre-university level as for electromagnetic energy? |
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May 2 |
comment |
Relativistic origin of magnetic field @ChrisWhite it's already out and I have a copy:) It's even better than the original because Morin has added new stuff, used SI units, and provided worked out solutions |
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May 2 |
comment |
Relativistic origin of magnetic field I doubt the OP knows what a four-current-density is |
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Apr 28 |
asked | Is Dirac's description of a photon in a split beam still seen as correct today? |
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Apr 26 |
comment |
Desperately Need Help with Grade 9 Static Electricity This is the right answer. |
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Apr 24 |
answered | Energy stored in fields |
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Apr 24 |
comment |
Lagrangian mechanics and time derivative on general coordinates I agree, this answer is OK. |
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Apr 23 |
answered | Difference between electrostatic and magnetic field |
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Apr 19 |
comment |
How do forces work @RussAbbott I was trying to say that physical measurements are what matters, and how they enable us to create models of the world. Force is just a physical measurement that allows us to predict what we'll measure for the acceleration of a mass. Wanting to know how force manages to do what it does is open to hand-waving make-believe interpretation. All we can say is that if we make these physical measurements, then we'll measure this other physical measurement. |
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Apr 18 |
answered | How do forces work |
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Apr 17 |
revised |
Equation of motion of charged particle under effect of magnetic field Best to insert image since the link may be deleted later on. |
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Apr 17 |
suggested | suggested edit on Equation of motion of charged particle under effect of magnetic field |
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Apr 16 |
answered | What makes running so much less energy-efficient than bicycling? |
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Apr 15 |
comment |
When can a center of mechanical momentum frame be found for an electromagnetic system? @DavidH OK, I've added the your suggestion. I would have thought the relativity of simultaneity would make it impossible for it to be generally true. We're summing the non-local mechanical momentum in one frame at the same time, and then boosting to another frame where they're no longer simultaneous. Rather than using the comments here, it might be better if you could answer the question, so we can use the comments under it ;) |
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Apr 15 |
revised |
When can a center of mechanical momentum frame be found for an electromagnetic system? added 55 characters in body |
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Apr 15 |
asked | When can a center of mechanical momentum frame be found for an electromagnetic system? |
