Tagged Questions
0
votes
1answer
88 views
Force of electromagnet on piece of iron
I can find equations to give the force of an electromagnet on a piece of iron when the iron touches the electromagnet.
But what about when the iron is some distance from the electromagnet? ...
5
votes
1answer
139 views
Can an induction coil heat two layers of metal?
Imagine we have an induction coil which is strong enough to heat a sheet of metal. We can put a sheet of ferromagnetic metal close to the coil at distance $h_1$, and it gets heated to temperature ...
-1
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2answers
80 views
What could be some applications for a highly compressed magnetic field?
If you had a powerful electromagnet in the shape of a hollow sphere in which the top and bottom halves are the opposing poles, what can the magnetic filed at the center of the sphere be used for?
0
votes
3answers
875 views
Magnetic flying engine
I invented a flying engine moving entirely by magnetic forces (such as the force related with magnetic field of the Earth).
See http://porton.wordpress.com/2011/12/23/magnetic-vehicle/
The question ...
2
votes
2answers
422 views
Do multiple permanent magnets aggregated together approach the same strength as a single magnet of the same size?
Here's an applied physics question. ;) If I buy some cube or sphere magnets like these, can I aggregate them together to create a stronger magnet (almost as strong as a single magnet)?
