Electricity and magnetism are two related phenomena produced by the electromagnetic force. Together, they form electromagnetism. A moving electric charge generates a magnetic field. A magnetic field induces electric charge movement, producing an electric current.

An object with a moving charge always has both magnetic and electric fields….Difference Between Electric Field And Magnetic Field.

The force created by the electric field is much stronger than the force created by the magnetic field. From a classical perspective in the history of electromagnetism, the electromagnetic field can be regarded as a smooth, continuous field, propagated in a wavelike manner.

An electric field is essentially a force field that’s created around an electrically charged particle. A magnetic field is one that’s created around a permanent magnetic substance or a moving electrically charged object.

Tiny electrical currents exist in the human body due to the chemical reactions that occur as part of the normal bodily functions, even in the absence of external electric fields. They cause current to flow through the body to the ground. Low-frequency magnetic fields induce circulating currents within the human body.

1. Put a material in a magnetic field.
2. Run a current through this material.
3. The magnetic field will create a “sideways” change in electric potential across the material – which you can measure.
4. Using this change in potential and the size of the material, you get the magnitude of the magnetic field.

Magnetic forces are much stronger than electric forces when you compare them at the saturation and breakdown strengths of materials. That is the reason why all practical electromechanical conversion devices use magnetic forces.

The magnetic field is weakest at the center and strongest between the two poles just outside the bar magnet. The magnetic field lines are densest at the center and least dense between the two poles just outside the bar magnet.

The magnetic field of a bar magnet is strongest at either pole of the magnet. It is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.

What is a typical AC magnetic field level in a home? Inside a house usually measures about 0.2 to 1.0 mG if not very close to appliances or wiring. Apartments and condos are a bit higher. Beds and play areas can be located where the fields are low, for example below 1.0 mG.

The highest magnetic fields currently obtainable from permanent magnets are on the order of 2 tesla. (One tesla, abbreviated T, is equal to 10,000 gauss and is approximately 50,000 times the magnetic field of Earth at a latitude of 50 degrees.) Much higher fields can be produced by electromagnets.

http://solomon.as.utexas.edu/magnetar.html. From there: Fields in excess of 109 Gauss, however, would be instantly lethal. Such fields strongly distort atoms, compressing atomic electron clouds into cigar shapes, with the long axis aligned with the field, thus rendering the chemistry of life impossible.

5 Tips to Safeguard Against Electromagnetic Radiation

1. Disable Wireless Functions. Wireless devices — including routers, printers, tablets, and laptops — all emit a Wi-Fi signal.
2. Replace Wireless With Wired Devices.
3. Keep EMF Sources at a Distance.
4. Use Your Smartphone Safely.
5. Prioritize Sleeping Areas.

Answer. The human body is a good conductor of electricity. Under the influence of an alternating current, the electric charges inside the body move back and forth at the same frequency as the field (60 Hz). In other words, the field produces weak electric currents in the body.

Magnetism is not felt by the human senses in any obvious way, nor is there any substantial evidence that it is harmful. Yet it does have subtle effects on vision and heart performance. As the field strength is increased, the person will begin to see a faint glow around the visual periphery.

No, not all planets have magnetic fields. The four gas giants have extremely strong magnetic fields, Earth has a moderately strong magnetic field, Mercury has an extremely weak field, but Venus and Mars have almost no measurable fields.

When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract. Since a free hanging magnet will always face north, magnets have long been used for finding direction.

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hard drive magnet

Larger magnets will provide a stronger and more consistent magnetic field between them.