I read "How Things Work". They mentioned magnetic field and then electric field. Can u tell us the difference?
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Electric fields are generated by a stationary charge, and the intensity of the electric field depends on the magnitude of the charge, and the distance of the point where you are measuring the intensity from the stationary charge. The exact variance of the intensity is given by Coulomb's law, which you can find in any physics book. Some properties of the electric field are listed below:\n\n1. The force felt by a charged object in an electric field varies with the inverse square of the distance from the point of the charge creating the electric field. \n\n2. Electric field is a conservative field, which really in simple words means that when you go in a circle in an electric field, and come back to the point to started from, the total work done on whatever is moving in that circle is zero.\n\n3. You can apply the superposition principle on a charge that is feeling the force of many charges, which means that you can vectorially add forces felt by the charge due to the many charges.\n\n4. Electric field lines are a visual way of reconciling the mathematical form of the electrical field to the visual form of the electrical field. All field lines begin at a positive charge and end at a negative charge and the direction of the field is tangential to the curve of the electric field line.\n\nMagnetic fields on the other hands are either generated by moving electric charge or a current, or they are created by a magnetic dipole. Keep in mind that magnetic monopoles, although are highly theorized about, are not known to be in existence. There are many properties of a magnetic field but the most notable one is that the field created is not conservative, thus work done in a circle is not zero.
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Magnetic fields are created by movement of conductive materials around electric charge or vice-versa.  This is called induction.  Our Earth's magnetic field is created by the rotation of our mostly iron core (induction).  That field protects us from harmful radiation from our sun.\n\nTime has nothing to do with magnetic fields.  Time is a dimension, which allows matter to exhibit properties, but can be altered depending on the frame of reference of any given object.\n\nOh, and by the way, creation theory isn't science.  You can't assume a theory is correct and then arrange "evidence" around that theory and call it science.
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read this page\nhttp://en.wikipedia.org/wiki/Field_(physics)
428050
flux are field lines. In reference to the electric motors... when electric current flows through a wire placed in a magnetic field, the wire moves in the direction perpendicular to the magnetic flux and also to the direction of electric current.\n\nIn reality flux lines are "imaginary". They were used by Michael Farady to explain electric and magnetic field lines.
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Maxwell combined with Einstein showed that the forces associated with elecricity and with magnetism are really the same. THis is because a moving charged particle creates magnetism, but if the particle is moving is based upon your reference frame (you can be moving with the particle and you wouldn't think it was moving). \n\nLight is an electric and magnetic wave and they are always perpendicular to each other... it looks like this: http://www.geo.mtu.edu/rs/back/spectrum/e_mag.gif\n\nA photon is when this wave acts like a particle, and the force that this particle carries is electricity and magnetism (electromagnetic force).
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1. Percentage is a ratio between two numbers times 100. Usually it is a part divided by a whole. To find a percentage we need both of these numbers. So the answer to your question I need to know which is the “non scientists who have no real clue of what electromagnetic pure energy is” and the other number to compute or even estimate the percentage.\n2. How does one compute purity of electromagnetic energy I have no clue and I pretended to work as a scientist for the past 20 years.\n3. And finally I have no firm idea about what gravity is and frankly what is pure energy. How ever I do know that if we have electrical charge in motion it will generate a magnetic field and magnetic field in motion will force electric charge to move. It seems that electricity and magnetism are products of the same electromagnetic phenomena.\n4. As far as gravity is concerned I do not know how exactly it relates to electromagnetism. Theory of relativity may provide some insight and there we may encounter some pure energy. \n\nI hope it was helpful.
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Gee .. been a while.  If I remember correctly the magnetic field is perpendicular to the electrical field.  Thus around the two wires the magnetic fields move in the same direction and combine, producing a net attractive force.\n\nIf the currents go the opposite direction, the forces repel.\n\nSee the link below for a more detailed explanation and pictures:
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A current in a wire creates a magnetic field around the wire.  The reverse is also true, and that is what is used here.  A magnet moves in a coil of wire.  The fluctuating magnetic field induces a current in the wire.  Store that in a battery, or use it to power a lightbulb.
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The electric and magnetic vectors are perpendicular to the direction of propagation.\n\nAlso the electric and magnetic vectors are at right angles to each other.
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Most magnets are formed by moving electrons. Each moving electron creates a small magnetic field. If lots of electrons are moving along the same path, they create a bigger magnetic field. Because of this you can make a magnet by using electric current. If you wrap a coil of wire around a piece of iron (like a big nail) and then put electricity through it using a battery, you will create a magnetic field. This is what we call an "electromagnet." Remember, only use batteries if you try this, never use a wall outlet--this is much too dangerous!!
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There is a symbol for magnetic fields, which is B and has the unit Tesla.  \n\nGenerally, all forces are represented by F, and you just specify the context in which the force takes place.\n\nFor example:\n\nA charged particle moving through a magnetic field experiences a magnetic force given by:\n\nF = qv X B\n\nWhich is the charge, q, times its velocity v, in a cross product with the magnetic field.  \n\nAlso, there is a an equation for magnetic force between two magnetics that is similar to that of gravity and electricity:\n\nF = Km1m2/r^2\n\nWhere K is the constant, m one and m two are called magnetic moments, and r is the distance between them.  Still, the symbol for the force is just F.
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According to Maxwell's laws, one type of field can induce the other and vice versa. This makes electromagnetic waves possible.
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OK, here they are verbally:\n\n"Maxwell's four equations express, respectively, how electric charges produce electric fields (Gauss' law), the experimental absence of magnetic monopoles, how currents and changing electric fields produce magnetic fields (the Ampere-Maxwell law), and how changing magnetic fields produce electric fields (Faraday's law of induction)." [See source.]\n\nGauss' Law--simply says electrons in motion will create a force field around the current.  This law follows the inverse square of the distance rule and the phenomenon is the basis for radio and TV broadcasting waves.\n\nThe monopole equation simply says that there must be both a north and south pole in magnetism.  (However, sometimes fictitious monopoles are used mathematically to solve some problems.)\n\nThe Ampere-Maxwell equation links changing electrical current to the creation of magnetic flux.  The Faraday equation links changing magnetic flux to the creation of electrical current.  This is the stuff that electric motors and electric generators are made of.\n\nThe Maxwell equations have a lot of practical applications.  Wave guides, such as for high powered radars, and coax cables, like for your TV, are designed using Maxwall equations.
965632
There is an important law in physics which says that a moving or changing electric current produces a magnetic field. This is the reason electromagnets and motors work. The opposite is also true. A moving or changing magnetic field produces an electric current. This is the way electric generators work. If we have a high frequency alternating current moving through a conductor, as this electric field continually rises and collapses (it's alternating, remember) it produces a magnetic field at right angles to it. As this magnetic field rises and collapses it produces another electric field which in turn produces a magnetic and so on. This is a self propogating process which once started will continue moving through space forever. At sufficiently high frequency this produces a wave motion called an electromagnetic field which travels away from the conductor in all directions in ever widening circles much like moving your hand rapidly in water causes widening waves to travel on the surface. Because they travel in widening circles these waves are referred to as radiation, from the word radius which means like the spokes of a wheel. Depending on their frequency (how many times the waves rise and fall per second) we can classify many types of electromagnetic radiation such as light, radio waves, microwaves, gamma radiation..... This is a highly simplified description of what really happens and it might not satisfy some scientific purists but it works with my students. Hope it helps you.
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Magnetism is caused by  electrical charges in motion. This is not necessarily something unique to electrical equipment, which is the case for electromagnetism, but also for permanent magnets. It is the motion of the electrons around the nuclei, and also the spin of the electrons, that cause the magnetism in a natural magnet. The magnetic field of Earth is believed to come from movements inside the planet, where oceans and rivers of melted metals exist.\n\nI can only think of two types of magnet; natural magnet and electro-magnet.
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When the electric field changes, it induces a change of magnetic field.\nWhen the magnetic field changes, it induces a change of electric field.\nSo they influence each other.\nThe changes lead to a wave which travels with the speed of light, being 300 Mm/s in vacuo. This is true whatever the frequence is.\nAlways is\nwavelength x frequence = speed of light.\nThe electromagnetic field is the part of space where the wave is.
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when the magnetic needle (a magnet) is places close to any metal, the magnetic field generated by the magnet will cut the metal and causes some electron to move inside the metal, which causes to metal to have different electric charge at each end. now because there is electric charge, it causes an electromagnetic field (EMF). this newly generated EMF interacts with the magnetic field created by the magentic needle and causes it to reflect.\nI remeber doing a physics experiment that illustrates this same effect. we had two small synlindrical metals, one of them was metal the other just normal metal. we put each one of them seperatly from one end of a metal tube and let it fall through to the other end, the metal usually gets from the other side quickly because it is falling free fall in the tube, however, when we put the metal inside it, it took much much longer time for the metal to fall through, the reason, as the magnit is moving (falling down) inside the tube, it is generating a current in the tube which in tern creats a magnetic field which opposes the magnetic field created by the magnet therefor the magnetic field creats a force that tried to repel from the falling magnet and it creates a force that tries to push the magnet up in the tube, of course the gravity is stronger and eventually the magnet comes out from the other end, but it didn't fall a free fall therefor it came out late..\n\nI hope this helps.