A electromagnetic field works by an electrical current flowing through an inductor which induces a magnetic field, as soon as the electrical current is switched off to the inductor, the electromagnetic field collapses.
When electrons are rubbed from one object to another (wool -> polythene), making the wool positively charged and the polythene negatively charged.
it works like because there is like electricity flowing around the wire which would attract metal or repel it which would make it move Hope that helps
Electrons are transferred to a metallic sphere. Electrons are stripped off a wool pad.
If pads are using AC, yes you can get some electromagnetic field because of it.
No. Earth's gravitational field is due to the large mass within it; the electromagnetic field is due to the movement of the metals in its core. There are also the standard differences between a gravitational and an EM field.
when a charge oscillates for example in a capacitor it produce an electric field; which in turns produce a magnetic field in an inductance. the magnetic field oscillates perpendicular to the electric field and an electromagnetic waves perpendicular to both is produced.
Electromagnetic waves were first postulated by James Clerk Maxwell and subsequently confirmed by Heinrich Hertz. Maxwell derived a wave form of the electric and magnetic equations, revealing the wave-like nature of electric and magnetic fields, and their symmetry. Because the speed of EM waves predicted by the wave equation coincided with the measured speed of light, Maxwell concluded that light itself is an EM wave. According to Maxwell's equations, a time-varying electric field generates a magnetic field and vice versa. Therefore, as an oscillating electric field generates an oscillating magnetic field, the magnetic field in turn generates an oscillating electric field, and so on. These oscillating fields together form an electromagnetic wave. A quantum theory of the interaction between electromagnetic radiation and matter such as electrons is described by the theory of quantum electrodynamics.
It is the electromagnetic force that speaks to the electric and magnetic forces. They (electric force and magnetic force) are one force in the eyes of the physicist. Use the link below for more information.
The polarization of an electromagnetic field is defined as the direction of its E field (electrostatic).
Part of the electromagnetic spectrum can be detected by eye, and we call that bit "light". The thing about electromagnetic radiation is that a varying magnetic field causes a (varying) electric field (that's how power stations make electric current) and a varying electric field causes a (varying) magnetic field. So electromagnetic radiation is what you get when a varying electric field creates a varying magnetic field which in turn contributes the varying electric field. The whole thing then appears as bundled varying electric and magnetic field wave system which propagates at the velocity of light, That is why it is called electromagnetic. There are no magnetic poles or electric charges in it, and it can travel through a vacuum.
An electromagnetic field is a physical field produced by electrically charged objects. The field can be viewed as the combination of an electric field and a magnetic field. The electromagnetic field may be viewed in two distinct ways: a continuous structure or a discrete structure.
Not really. You could have both an electric field and a magnetic field occupying the same space at the same time but they wouldn't 'make the definition' of electromagnetic until they began to fluxuate in phase at a harmonized frequency.
The scientists measured the electromagnetic field.
Well one way to look at it is that a photon IS an electromagnetic field. The photon is the gauge particle for the electromagnetic force. Without photons there would be no electromagnetic interaction force, and therefore no electromagnetic fields.
when and where was the electomagnetic field
an electromagnetic field interacts with charged particles.
It depends what you are talking about... Electromagnetic field Electromagnetic force Electromagnetic radiation Electromagnetic spectrum Electromagnetic therapy Electromagnetic waves ...they each have different meanings.
If pads are using AC, yes you can get some electromagnetic field because of it.
Electric field and magnetic field
An electromagnetic wave, in its simplest description, is a wave that as it propagates keeps converting its magnetic field into an electric field while converting its electric field into a magnetic field.