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By the existence of the magnetic force. If you do nothing with the magnet, nothing from its energy will be noticed, but the characteristic of energy is, that it "occurs" when a pressure (force) is applied. That means: only if the magnet is e.g. moved in a field, something will happen - what we call the occurence of energy.
The magnetic force itself is in every material which is made up from atoms. This is due to the movement of the electrons around a core - simply explained. But in magnets, this so-called magnetic moment of almost all atoms shows in an equal direction, so the magnetic force is "noticeable".
en.wikipedia.org...
A live frog levitates inside a 32 mm diameter vertical bore of a Bitter solenoid in a magnetic field of about 16 teslas at the Nijmegen High Field Magnet Laboratory
www.hfml.ru.nl...
Originally posted by jta79
Hey all! I have a question on the origin of the force of magnets. If energy can never be created, or destroyed... Where does a magnet get its energy from? So far this is the best answer to this question that I have found.
By the existence of the magnetic force. If you do nothing with the magnet, nothing from its energy will be noticed, but the characteristic of energy is, that it "occurs" when a pressure (force) is applied. That means: only if the magnet is e.g. moved in a field, something will happen - what we call the occurence of energy.
This seems to make sense to me kind of, but I still have one problem with it; The theory will work with all ferrous materials, but if I somehow aligned all of the charges in the atomic structure of a wooden 2X4 would that make it magnetic too?
I've been asking myself this question for years and I've never yet come up with an answer or even a theory that seems make total sense..
Thanks for any ideas
JTA
Originally posted by jta79
I have a question on the origin of the force of magnets. If energy can never be created, or destroyed... Where does a magnet get its energy from?
This seems to make sense to me kind of, but I still have one problem with it; The theory will work with all ferrous materials, but if I somehow aligned all of the charges in the atomic structure of a wooden 2X4 would that make it magnetic too?
No, because wood is not something made up of just one molecule but of a whole bunch of other molecules. You can generate magnetism in some non-ferrous substances, but not in something where the molecules aren't the same kind and the same shape.
Originally posted by junglelord
does that include my diamagentic post and floating frogs?
Originally posted by just theory
Magnets do give and take energy though don't they?
If not how do you work out the simple fact a piece of metal is attracted, if you put a magnet above a piece of metal it fly's up to it meaning the magnet does some work, by doing so it must have lost energy somehow surely?
Originally posted by Byrd
It's more similar to gravity than to energy waves. It is a property of something ... and yes, the molecules actually do drift out of alignment so that magnetism does decay over time.
Originally posted by Indellkoffer
No, it works like gravity. The earth doesn't lose gravity because we are attracted by Earth's gravity.
Originally posted by just theory
when you lift a weight from the ground and put it on a table, by doing that you've somehow mysteriously given it 'potential' energy to fall back down due to gravity
Originally posted by dbatesI never thought of magnets in this manner. Do they draw their power from some higher dimension much like gravity does?
Thinking of gravity and magnetism in the same manner, they both appear to have an endless supply of energy.
Would a magnet eventually grow weaker?
If you have two magnets close to each other, say one on either side of a wooden table, does the energy that's used to hold them together give off any heat?
Obviously a great deal of energy is expended to attract or repel magnets from each other. But where does all this energy go to? Back into the ether of some other dimension I suppose. *shrugs*
Originally posted by dbates
What's really odd is if you lift that object a little further, say 100 miles out past the space station, all that potential energy is gone. It would go from megatons of force to none....just a cold object floating in space. You're right about the asteroid impact. All the energy for the explosion comes from the earth itself. This whole concept is quite unsettling and mocks the laws of thermodynamics.
Thinking of it as that kind of energy is misleading. It's a passive property... like potential energy. Until you do something with it, it's doesn't generate anything.
Like a rock on a cliffside. The rock has a huge amount of potential energy but isn't changed into kinetic energy until you shove it off the cliff. Once it lands, it has no more potential energy. Same thing with a magnet.
Did that make sense?
Originally posted by Byrd
... as long as you remember to adjust for the fact that the universe is an open system and not a closed system