Energy - Magnetic 

A magnetic is a piece of metal that has the ability to attract iron, nickel, cobalt, or certain specific other kinds of metal. Every magnet contains two distinct regions, one known as the north pole and one, the south pole. As with electrical charges, unlike poles attract each other and like poles repel each other.
A study of magnets allows the introduction of a new concept in energy, the concept of a field. An energy field is a region in space in which a magnetic, electrical, or some other kind of force can be experienced. For example, imagine that a piece of iron is placed at a distance of 2 in (5 cm) from a bar magnet. If the magnet is strong enough, it may pull on the iron strongly enough to cause it to move. The piece of iron is said to be within the magnetic field of the bar magnet.

The concept of an energy field was, at one time, a very difficult one for scientists to understand and accept. How could one object exert a force on another object if the two were not in contact with each other? Eventually, it became clear that forces can operate at a distance from each other. Electrical charges and magnetic poles seem to exert their forces throughout a field along pathways known as lines of force.
One of the great discoveries in the history of physics was made by the English physicist James Clerk Maxwell (1831-1879) in the late nineteenth century. Maxwell found that the two major forms of energy known as electricity and magnetism are not really different from each other, but are instead closely associated with each other. That is, every electrical current has associated with it a magnetic field and every changing magnetic field creates its own electrical current.
As a result of Maxwell's work, it is often more correct to speak of electromagnetic energy, a form of energy that has both electrical and magnetic components. Scientists now know that a number of seemingly different types of energy are all actually forms of electromagnetic energy. These include x rays, gamma rays, ultraviolet light, visible light, infrared radiation, radio waves, and microwaves. These forms of electromagnetic energy differ from each other in terms of the wavelength and frequency of the energy wave on which they travel. The waves associated with x rays, for example, have very short wavelengths and very high frequencies, while the waves associated with microwaves have much longer wavelengths and much lower frequencies.

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How to Build a Free Energy Magnetic Motor

Many have tried building a free energy-producing magnetic motor. I am seeing a lot  in my daily quest through alternative energy news, but what I have learned is that energy is not free, perpetual motion machines do not exist, everything is taken from somewhere and put elsewhere.

Free energy from magnets respects the same rule.

There also is this so-called “free energy”, the zero-point energy, proven mathematically

But there are also “green pessimistic” websites. When they see something out of “common sense” boundaries, they freak out and scream something like”omg, this can’tbe real! I need no proof! I must not think of this! Perish, Satan!”

I took such an article today as an inspiration because it talks about a magnetic motor, one of my favorite free energy topics, about which I haven’t heard much lately.Here is the whole process of transforming the free magnetic energy into mechanical energy, explained by the invention’s author (Sandeep Acharya):

“Think of Two Powerful Magnets. One fixed plate over rotating disk with North side parallel to disk surface, and other on the rotating plate connected to small gear G1. If the magnet over gear G1’s north side is parallel to that of which is over Rotating disk then they both will repel each other. Now the magnet over the left disk will try to rotate the disk below in (think) clock-wise direction.

Now there is another magnet at 30 angular distance on Rotating Disk on both side of the magnet M1. Now the large gear G0 is connected directly to Rotating disk with a rod. So after repulsion if Rotating-Disk rotates it will rotate the gear G0 which is connected to gear G1. So the magnet over G1 rotate in the direction perpendicular to that of fixed-disk surface.

Now the angle and teeth ratio of G0 and G1 is such that when the magnet M1 moves 30 degree, the other magnet which came in the position where M1 was, it will be repelled by the magnet of Fixed-disk as the magnet on Fixed-disk has moved 360 degrees on the plate above gear G1. So if the first repulsion of Magnets M1 and M0 is powerful enough to make rotating-disk rotate 30-degrees or more the disk would rotate till error occurs in position of disk, friction loss or magnetic energy loss.

The space between two disk is just more than the width of magnets M0 and M1 and space needed for connecting gear G0 to rotating disk with a rod. Now I’ve not tested with actual objects. When designing you may think of losses or may think that when rotating disk rotates 30 degrees and magnet M0 will be rotating clock-wise on the plate over G2 then it may start to repel M1 after it has rotated about 25 degrees, the solution is to use more powerful magnets.

If all the objects are made precisely with measurements given and the rectangular cubic magnets are powerful enough to rotate more then 30 degrees in first repulsion then the system will work.

Here friction and other losses are neglected as magnets are much more powerful. But think of friction between rotating disk and Shaft, it can be neglected by using magnetic joint between them.

On the left primary measurements of needed objects are given. If you find any reason of not running this mechanism let me know.”

What do you think? Could it work?

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What is magnetic energy? Where is it used?

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6 Answers

Steve Schafer, Coder, part-time physicist, birder

Answered Nov 15 2017 · Author has 5.7k answers and 3.9m answer views

Magnetic energy is potential energy that is stored in a magnetic field. In electronics, it is an important part of the operation of transformers and inductors. In transformers, magnetic energy is the conduit by which electrical power is transferred from the primary winding to the secondary winding(s), even though there is no direct electrical connection. In inductors, magnetic energy is stored temporarily in the magnetic field of the inductor, to be doled out at a later time (where “later time” may be mere nanoseconds later).

Magnetic energy is also part of the operation of electric motors, solenoid actuators, some kinds of circuit breakers, etc.

By the way, if you go online, you’ll find lots of discussions of “free” magnetic energy. That is pure, 100% nonsense.

3.3k Views · View Upvoters

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Jack Sullivan, Retired, widower, enjoys the sciences, sociology, philosophy

Answered Mar 13 2017 · Author has 4k answers and 1.5m answer views

Originally Answered: What is magnetic energy used for?

To call magnetism energy is up for debate in the scientific community, and is a topic for another discussion. Magnetism has an extremely wide range of applications and makes virtually all of the electronic technical devices we have today possible. All motors and generators use magnetism to either create mechanical movement or generate electricity. Magnetic resonance imaging (MRI) machines utilize powerful electromagnetic fields. The list of practical applications all across a wide range of industries is nearly limitless, depending only on imagination, and it is even speculated that magnetism maybe one day provide a source of inexhaustible, pollution-free energy.

1k Views · Answer requested by Maxwell Faison

Aaron Dahlen, MSEE from MSU, Mankato

Answered May 15 · Author has 762 answers and 624.5k answer views

It was 9th grade, the year I lettered in swimming, and the year I learned about energy storage in a magnetic field. It hit me like a bolt of lightning.

I remember presenting the transformer to the science class that day. A transformer passes AC but not DC. I had used a 9 VDC battery to show that DC would not pass through a transformer. Normally, transformers and 9 VDC batteries aren’t very interesting. However, transformers (a type of inductor) do store energy in a magnetic field.

I had connected the transformer to measure the DC current; a large current was measured on the secondary of the transformer. This current supported a large magnetic field in the transformer’s core.

And then it happened, as I disconnected the battery I got kicked by the stored energy.

You could think of this as energy in motion. As long as the DC current is flowing, a nice steady magnetic field is maintained - energy is stored in this magnetic field. When I disconnected the battery, this energy in motion had to go somewhere. ZAP, through me it went.

Later I learned that inductors “like” to keep current constant. When I connected that battery there was a certain current. When I disconnected the battery, the current remained the same. Think about that. The disconnected battery is an open circuit. In order to keep current constant the voltage goes sky high.

---

Like it or not, this energy storage is with us in every transformer and motor. As you study electronics you will learn about ELI the ICE man. The first term tells us that voltage leads current in an inductive circuit. This makes AC circuits, especially motors, problematic. You can get a flavor for this problem by reading about Power factor - Wikipedia.

Regards,

APDahlen

1.1k Views · View Upvoters

Ken Goudsward, studied Musicology & Physics at Vancouver Island University (1993)

Answered Mar 13 2017

Originally Answered: What is magnetic energy used for?

Well for one thing, magnets are used in electric motors.

See How Electric Motors Work

also, if you reverse this principle, you get electric generators, which provide most of our electricity (not solar, or batteries though, those use different principles).

1.7k Views

Marty Green, Former "all-but-thesis" PhD student in physics at U of Manitoba.

Answered Mar 14 2017 · Author has 190 answers and 163.9k answer views

Originally Answered: What is magnetic energy used for?

Magnetism is an integral part of the workings of all kinds of electro/mechanical devices and systems, but the question asks about “magnetic ENERGY”; and the most commonplace application is the ignition spark in any gas-powered engine. The battery charges up a coil with magnetic energy; when the charging circuit is interrupted, that energy is immediatley delivered to the spark.

1.1k Views · View Upvoters

Aftab Sani, B.Sc from Ahsanullah University of Science and Technology (2017)

Answered Nov 15 2017

A magnet attract or repel any magnetic type particle. This happens because of energy. Lots of magnetic flux goes from the north pole to the south pole of a magnet. This flux is the main reason of attracting or repeling. The more density of flux the more the power of repeling or attracting.

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Magnetic energy

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Magnetic energy and electric energy are related by Maxwell's equations. The potential energy of a magnet of magnetic moment, ${\displaystyle \mathbf {m} }$, in a magnetic field, ${\displaystyle \mathbf {B} }$, is defined as the mechanical work of magnetic force (actually of magnetic torque) on re-alignment of the vector of the Magnetic dipole moment, and is equal:

${\displaystyle E_{\rm {p,m}}=-\mathbf {m} \cdot \mathbf {B} }$

while the energy stored in an inductor (of inductance, ${\displaystyle L}$) when current, ${\displaystyle I}$, is passing via it is:

${\displaystyle E_{\rm {p,m}}={\frac {1}{2}}LI^{2}}$.

This second expression forms the basis for superconducting magnetic energy storage.

Energy is also stored in a magnetic field. The energy per unit volume in a region of space of permeability, ${\displaystyle \mu _{0}}$, containing magnetic field, ${\displaystyle \mathbf {B} }$, is:

${\displaystyle u={\frac {1}{2}}{\frac {B^{2}}{\mu _{0}}}}$

More generally, if we assume that the medium is paramagnetic or diamagnetic so that a linear constitutive equation exists that relates ${\displaystyle \mathbf {B} }$ and ${\displaystyle \mathbf {H} }$, then it can be shown that the magnetic field stores an energy of

${\displaystyle E={\frac {1}{2}}\int \mathbf {H} \cdot \mathbf {B} \ dV}$

where the integral is evaluated over the whole region where the magnetic field exists

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