meta user
network profile
| bio | website | |
|---|---|---|
| location | Pop Star, MathCraft | |
| age | ||
| visits | member for | 11 months |
| seen | 1 hour ago | |
| stats | profile views | 47 |
A student in Philosophy but also curious in many fields.
I don't know,
But I want to know.
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Apr 19 |
reviewed | Reviewed Induced charge on sphere |
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Apr 16 |
awarded | Enthusiast |
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Apr 7 |
reviewed | No Action Needed Frequency of a Tuning Fork |
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Apr 7 |
reviewed | No Action Needed How to calculate the upper limit on the number of days weather can be forecast reliably? |
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Apr 5 |
awarded | Custodian |
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Apr 5 |
reviewed | No Action Needed Where can I search for high quality telescope images of Earth's moon? |
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Apr 5 |
reviewed | No Action Needed In electrostatics, why the electric field inside a conductor is zero? |
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Mar 19 |
comment |
An example which contradict to Newton's 3rd law? Well, we need to include the EM-field to avoid this problem, but it seems EM-field obeys more Relativistic mechanics rather than Newton's. So does the 3rd law also holds in Relativistic mechanics? Besides, it seems quantities such as 'force' and 'acceleration' are not so clear and important in Relativistic mechanics... |
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Feb 23 |
awarded | Quorum |
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Jan 22 |
awarded | Analytical |
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Jan 22 |
accepted | How can mass affect spacetime? |
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Jan 22 |
awarded | Informed |
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Jan 21 |
comment |
How can mass affect spacetime? In GR, is there no space-time independent from matters&fields? |
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Jan 20 |
comment |
How can mass affect spacetime? @elcojon In my view, spacetime is a frame which has capability to contain realities, but itself is not a reality. |
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Jan 20 |
asked | How can mass affect spacetime? |
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Jan 19 |
accepted | An example which contradict to Newton's 3rd law? |
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Jan 19 |
revised |
An example which contradict to Newton's 3rd law? update |
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Jan 19 |
comment |
An example which contradict to Newton's 3rd law? Thank you very much. |
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Jan 18 |
comment |
An example which contradict to Newton's 3rd law? Okay, I have read section 8.2. It seems the interaction in classical field theory is localized. Hence the forces charges feel are given by EM-field rather than other charges. So the result is not $\vec{F}_{ab} \ne -\vec{F}_{ba}$ but $\vec{F}_{Fa}\ne -\vec{F}_{Fb}$ thus does not violate the 3rd law. |
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Jan 17 |
comment |
An example which contradict to Newton's 3rd law? Oh right, moving charges do not obey Coulomb&Biot-Savart's law... So I have added a condition that they are both moving in low velocity. Besides, many thanks to your book. |
