What is electromagnetic field?

electromagnetic field, a property of space caused by the motion of an electric charge . A stationary charge will produce only an electric field in the surrounding space. If the charge is moving, a magnetic field is also produced. An electric field can be produced also by a changing magnetic field.

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What can make electromagnetic waves NASA?

ELECTROMAGNETIC WAVES Electricity can be static, like the energy that can make your hair stand on end. Magnetism can also be static, as it is in a refrigerator magnet. A changing magnetic field will induce a changing electric field and vice-versa —the two are linked. These changing fields form electromagnetic waves.

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