Tagged Questions
3
votes
1answer
65 views
A rod filled with water and charged particles is rotated in magnetic field
Assume we have a rod of diameter $d$ and length $l$. It is filled with a mixture of water and, say, sodium chloride. Thus there are positively charged sodium ions and negatively charged chloride ions ...
0
votes
1answer
119 views
The equation of a ferrofluid under a magnetic field?
What is the parametric equation guiding the geometry of a ferrofluid under a magnetic field? See also this Wikipedia page.
From previous research, Maxwell's Equations and Navier-Stokes Equations were ...
2
votes
0answers
156 views
Solar wind and the Earth's magnetic field
I have again an old question from a comprehensive exam I took a couple of months ago. Lucky for me one could pick 5 out of 8 questions, because on some of the problems I didn't even know how to start. ...
4
votes
2answers
155 views
Dynamic ferrofluid sculptures
http://www.youtube.com/watch?v=UJJuq_pcyIQ
What exactly is going on in the video example? I understand the phenomena occurs because of magnetism but I am trying to figure out the mechanics behind ...
3
votes
1answer
268 views
Producing energy from magnetic flux loops
I've simplified this down by quite a lot but as far as I understand it, magnetic fields on the Sun's surface twist together and when it gets all a bit too much they release energy.
My question is why ...
5
votes
4answers
539 views
Help fill in my understanding of the Polywell fusion reactor
Polywell is a proposed new type of fusion reactor, which is designed to use magnetic fields to overcome the problems with the Elmore-Tuck-Watson fusor. I'm trying to understand exactly how it works.
...
7
votes
3answers
497 views
How can we make an order-of-magnitude estimate of the strength of Earth's magnetic field?
The source of Earth's magnetic field is a dynamo driven by convection current in the molten core. Using some basic physics principles (Maxwell's equations, fluid mechanics equations), properties of ...
