2006-06-13 05:26:19 · 7 answers · asked by free0677 1 in Science & Mathematics ➔ Astronomy & Space
When the electric field changes, it induces a change of magnetic field.
When the magnetic field changes, it induces a change of electric field.
So they influence each other.
The 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.
Always is
wavelength x frequence = speed of light.
The electromagnetic field is the part of space where the wave is.
2006-06-13 05:33:34 · answer #1 · answered by Thermo 6 · 2⤊ 0⤋
The electromagnetic field is a physical influence (a field) that permeates through all of space and which arises from electrically charged objects and describes one of the four fundamental forces of nature - electromagnetism. It can be viewed as the combination of an electric field and a magnetic field. The electric field is produced by non-moving charges and the magnetic field by moving charges (currents); these two are often described as the sources of the field.
2006-06-20 03:48:35 · answer #2 · answered by GOTCHA! 3 · 0⤊ 0⤋
A changing electric field induces a changing magnetic field and vice-versa. The result is called an "electromagnetic field ", which propagates in waves at the speed of light.
Thus, light is an electromagnetic field, as are X-rays, microwaves, television and radio signals. They differ by the rate of change of their electric and magnetic fields. This rate of change is called the "frequency" of the propagated wave.
The British scientist James Clerk Maxwell explained all this in his famous equations derived in the mid-19th century. He was the first to identify light as an electromagnetic field.
For more, see:
en.wikipedia.org/wiki/Electromagnetic_field
2006-06-13 06:01:14 · answer #3 · answered by CharlieQ 4 · 0⤊ 0⤋
It consists of an electric field and magnetic field that propogate at right angles of each other. It is comprises light, but more specifically any of the electromagnetic waves on the EM spectrum, so not just visible light.
2006-06-13 05:57:21 · answer #4 · answered by phyziczteacher 3 · 0⤊ 0⤋
Electromagnetic field is a region in space around a charge, current carrying assembly or magnetic material in which other electric or magnetic materials can experience the force exerted by them.
2006-06-13 05:33:02 · answer #5 · answered by ag_iitkgp 7 · 0⤊ 0⤋
it is a magnetic field caused by electricity.Like when a copper wire is wrapped around a piece of steel and electricity is run through the copper wire the steel becomes magnetic.But if the electricity stops flowing then the steel isn't magnetic anymore.
2006-06-13 06:10:12 · answer #6 · answered by hkyboy96 5 · 0⤊ 0⤋
where all the elctricity close out, posotive neutrons
2006-06-19 08:06:37 · answer #7 · answered by grayrussiaboy 3 · 0⤊ 0⤋