/sci/ - Science & Math » Thread #9822415

6KiB, 872x128, Untitled.png

View Same Google iqdb SauceNAO

Anonymous Thu 21 Jun 15:12:55 2018 No.9822415 View Reply Original Report

Quoted By: >>9822434

where, and how is this derived?

Anonymous

Anonymous Thu 21 Jun 2018 15:26:06 No.9822434 Report

Quoted By: >>9822438

>>9822415
>where
England.

>how
"Faraday's breakthrough came when he wrapped two insulated coils of wire around an iron ring, and found that upon passing a current through one coil a momentary current was induced in the other coil. [...] In subsequent experiments, he found that if he moved a magnet through a loop of wire an electric current flowed in that wire. The current also flowed if the loop was moved over a stationary magnet. His demonstrations established that a changing magnetic field produces an electric field." (Wikipedia)

Anonymous

Anonymous Thu 21 Jun 2018 15:27:47 No.9822438 Report

Quoted By: >>9822447

>>9822434
I'm talking about the mathematical derivation of it, I get how from there Maxwell's equation follows, curl(E)= -(del B)/(del t)

Anonymous

Anonymous Thu 21 Jun 2018 15:31:39 No.9822447 Report

Quoted By: >>9822453

>>9822438
You can take the line integral of both sides, then use Stokes theorem. That's half of it. Then you need some non trivial steps with the lorentz force law. Griffiths has a nice derivation.

Anonymous

Anonymous Thu 21 Jun 2018 15:35:21 No.9822453 Report

Quoted By:

>>9822447
Btw, that is not Faraday's law. It's the flux rule. Faradys law is the Maxwell equation, which only accounts for time varying fields. (Interestingly, Faraday's result was far more complex than Maxwell's version) The contribution of spatially varying fields and motional emf comes from the lorentz force

Capcode	All Only User Posts Only Moderator Posts Only Admin Posts Only Developer Posts
Show Posts	All Only With Images Only Without Images
Deleted Posts	All Only Deleted Posts Only Non-Deleted Posts
Ghost Posts	All Only Ghost Posts Only Non-Ghost Posts
Post Type	All Only Sticky Threads Only Opening Posts Only Reply Posts
Results	All Grouped By Threads
Order	Latest Posts First Oldest Posts First

Your latest searches