/sci/ - Science & Math » Thread #11381059

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/pg/ - physics general

Anonymous Thu 13 Feb 03:56:38 2020 No.11381059 View Reply Original Report

Quoted By: >>11381320 >>11381540 >>11382797

Let’s start off with an elementary problem, you should be able to solve this

Anonymous

Anonymous Thu 13 Feb 2020 03:58:40 No.11381062 Report

Quoted By:

Physics is gay

Anonymous

Anonymous Thu 13 Feb 2020 04:21:31 No.11381120 Report

Quoted By: >>11381353

I want physics generals to live but I'm not sure how I feel about this one starting with a homework problem

Anonymous

Anonymous Thu 13 Feb 2020 05:22:52 No.11381263 Report

Quoted By:

elementary

Anonymous

Anonymous Thu 13 Feb 2020 05:45:55 No.11381320 Report

Quoted By: >>11386241

>>11381059
Fucking bollocks, bros, I'm in Diff Eq now how much harder is the math gonna get?

Anonymous

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Anonymous Thu 13 Feb 2020 06:12:23 No.11381353 Report

Quoted By:

>>11381120
Well let's get it started on the right track then. Post interesting articles you're reading.
https://arxiv.org/abs/1712.02952
>We study topological phases in the hyperbolic plane using noncommutative geometry and T-duality, and show that fractional versions of the quantised indices for integer, spin and anomalous quantum Hall effects can result. Generalising models used in the Euclidean setting, a model for the bulk-boundary correspondence of fractional indices is proposed, guided by the geometry of hyperbolic boundaries.

Anonymous

Anonymous Thu 13 Feb 2020 08:02:20 No.11381540 Report

Quoted By: >>11381548

>>11381059
Magnetic field amplitude in a uniform plane wave is Electric field amplitude over the variable eta. RHR will give you its direction.

Anonymous

Anonymous Thu 13 Feb 2020 08:08:02 No.11381548 Report

Quoted By:

>>11381540
Also eta is 377 ohms in free space iirc

Anonymous

Anonymous Thu 13 Feb 2020 20:04:02 No.11382797 Report

Quoted By: >>11383166

>>11381059
How do you even do part a? I’m in E&M rn and I don’t recognize it

Anonymous

Anonymous Thu 13 Feb 2020 22:28:41 No.11383166 Report

Quoted By: >>11383299

>>11382797
Just use Maxwell's equation. For example:

$\nabla \times \mathbf{E} = - \frac{\partial \mathbf{B}}{\partial t} [\math].$

Anonymous

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Anonymous Thu 13 Feb 2020 23:31:03 No.11383299 Report

Quoted By: >>11383334

>>11383166
So like this?

Anonymous

Anonymous Thu 13 Feb 2020 23:56:53 No.11383334 Report

Quoted By: >>11383420

>>11383299
Exactly!

Anonymous

Anonymous Fri 14 Feb 2020 00:38:22 No.11383420 Report

Quoted By: >>11383595

>>11383334
Thanks. Can you give a hint on how to start with part B?

Anonymous

Anonymous Fri 14 Feb 2020 02:00:40 No.11383595 Report

Quoted By: >>11383599 >>11383773 >>11383880

>>11383420
Expand r in an infinite power series of, [\math] \lambda[\math] as well as [\math]\mathbf{E}[\math] and [\math]\mathbf{B}[\math]. Write [\math]B_0[\math] in terms of [\math]E_0[\math]. You already have the linear solution. Comparing the same powers from both sides you can find the higher order contributions.

Anonymous

Anonymous Fri 14 Feb 2020 02:01:44 No.11383599 Report

Quoted By:

>>11383595
Jesus, I can't into 4chan latex

Anonymous

Anonymous Fri 14 Feb 2020 03:27:55 No.11383773 Report

Quoted By: >>11383780

>>11383595
Thanks. Does this make sense what I did? I’m pretty confused by the problem desu

Anonymous

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Anonymous Fri 14 Feb 2020 03:31:27 No.11383780 Report

Quoted By:

>>11383773
Also, how does this question change if we were to have a circularly polarized field?

Anonymous

Anonymous Fri 14 Feb 2020 05:04:27 No.11383880 Report

Quoted By:

>>11383595
How do I calculate the second order response? Won’t r(2) = 0 because it’s damped but no driven so steady state solution vanishes?

Anonymous

Anonymous Fri 14 Feb 2020 05:09:14 No.11383887 Report

Quoted By: >>11384447 >>11385884 >>11386247

$TeX Here. [*/math]<br /><script type="math/tex; mode=display"> Remove * Leave spaces [*/eqn]<br />Happy Valentimes$

Anonymous

Anonymous Fri 14 Feb 2020 12:24:28 No.11384447 Report

Quoted By:

>>11383887
Thanks

Anonymous

Anonymous Sat 15 Feb 2020 01:01:37 No.11385884 Report

Quoted By:

>>11383887
Lol

Anonymous

Anonymous Sat 15 Feb 2020 03:22:20 No.11386241 Report

Quoted By:

>>11381320
much harder if you want to be a decent physicist and not a popsci nigger. if anything, you should enjoy the math more than anything

Anonymous

Anonymous Sat 15 Feb 2020 03:26:17 No.11386247 Report

Quoted By:

>>11383887
$\int_0^\infty BLACK NIGGER \ IQ \cdot dIQ = 0$

Anonymous

Anonymous Sat 15 Feb 2020 15:48:10 No.11387439 Report

Quoted By:

Do I undergrads have shit like this for homework nowadays?

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