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Jack
  • Member for 1 year, 3 months
  • Last seen more than a month ago
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I am a bachelor degree in Physics.

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1
After equation (1.6) the author said that "The sequence of integration and limiting process in Eq. (1.6) must not be interchanged" but he interchanged
Aug 26, 2023
1
Correct my classification.
Oct 2, 2023
1
Is the following true regarding the Levi-Civita symbol?
Oct 28, 2023
0
Is $\frac{∂}{x_{j}} \phi(\vec{r})$ at $\vec{ r}=0$ the same as $\frac{∂}{∂x_{j}} \phi(0)$ cause this is what the author stated in the attached screen?
Aug 30, 2023
0
Shouldn't the numerator of the second term in the summation in the last result be $-3\alpha x_{j0}(x_{k}-x_{k0})$?
Aug 31, 2023
0
How to prove that $\oint_{C} q[\vec{v}\times \vec{B}] \cdot d\vec{r}=0$
Sep 29, 2023
0
Is $\vec{\nabla}\times\vec{A}=\vec{0} $ the necessary and sufficient condition to write $\vec{A}=\vec{\nabla}f$?
Oct 1, 2023
-1
If $\vec{\nabla}× \vec{A}$=0, does this qualify as the necessary and sufficient condition for being able to write $\vec{A}=\vec{\nabla}$f? [duplicate]
Sep 25, 2023
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13
In what sense the laser radiation is monochromatic?
11
Can the laser light, in principle, take any wavelength in the EM spectrum?
7
How a piece of metal put in the oven reaching a constant temperature of 3000 K fit the model of a hole in a cavity?
5
What theorem Feynman is referring to?