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Mar
18
accepted Derivation of the general Lorentz transformation
Mar
18
answered Derivation of the general Lorentz transformation
Mar
15
awarded  Commentator
Mar
15
awarded  Informed
Mar
15
comment Derivation of the general Lorentz transformation
$U = \left(\begin{matrix} 1 & 0 \\ 0 & K^\textrm{t} \end{matrix}\right) \implies U^\textrm{t} = \left(\begin{matrix} 1 & 0 \\ 0 & K \end{matrix}\right) = \left(\begin{matrix} 1 & 0 \\ 0 & H \end{matrix}\right)$. However, I don't think that $K = H$. Secondly, I understand that you can use an intermediate basis, but I don't see the point: why not go straight back to the original basis? Thanks for helping me figure this out.
Mar
15
revised Derivation of the general Lorentz transformation
Added a question.
Mar
15
asked Derivation of the general Lorentz transformation
Mar
15
comment Special relativity: how to prove that $g = L^t g L$?
I'm glad you added the section on intuition. I was wondering how you thought of that.
Mar
15
comment Special relativity: how to prove that $g = L^t g L$?
Thanks. I guess it would only follow if $X^\textrm{t}gX = X^\textrm{t}L^\textrm{t}gLX$.
Mar
15
accepted Special relativity: how to prove that $g = L^t g L$?
Mar
15
asked Special relativity: how to prove that $g = L^t g L$?
Mar
15
accepted Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
Mar
13
comment Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
@Qmechanic I re-added the tag. Thanks for the link, I didn't realize this question should be labelled homework, even though I ran into it during self-study.
Mar
13
revised Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
edited tags
Mar
13
answered Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
Mar
13
revised Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
edited tags
Mar
13
revised Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
added 63 characters in body
Mar
13
revised Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
added 15 characters in body
Mar
12
revised Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
Added information, improved formatting, clarified wording.
Mar
12
comment Step in a proof that $\textrm{div} \ \mathbf{B} = 0$ from Biot-Savart's law
I think there is a typo in the book. I explained this in my edit.