Electromagnetic noise, for example from electric motors, is not ' seen ' by 2. 4 GHz receivers due to the noise's frequency ( which tends to be around 10 to 150 MHz ).

* Electromagnetic clutch: Typically a clutch that is engaged by an electromagnet that is an integral part of the clutch assembly.

Electromagnetic radiation ( EM radiation or EMR ) is a form of energy emitted and absorbed by charged particles, which exhibits wave-like behavior as it travels through space.

Electromagnetic radiation is a particular form of the more general electromagnetic field ( EM field ), which is produced by moving charges.

Electromagnetic radiation is associated with EM fields that are far enough away from the moving charges that produced them, that absorption of the EM radiation no longer affects the behavior of these moving charges.

Electromagnetic radiation is a transverse wave, meaning that the oscillations of the waves are perpendicular to the direction of energy transfer and travel.

Electromagnetic radiation composed of photons that carry minimum-ionization energy, or more, ( which includes the entire spectrum with shorter wavelengths ), is therefore termed ionizing radiation.

Electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction and gravitation.

Electromagnetic radiation is classified into types according to the frequency of the wave, these types include ( in order of increasing frequency ): radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays.

He completed Maxwell's set of equations in his later 1865 paper A Dynamical Theory of the Electromagnetic Field and demonstrated the fact that light is an electromagnetic wave.

Electromagnetic compatibility ( EMC ) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects ( Electromagnetic interference, or EMI ) that such energy may induce.

Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

* Electromagnetic energy is not converted from the surface wave field to another form of energy ( except in leaky or lossy surface waves ) such that the wave does not transmit power normal to the interface, i. e. it is evanescent along that dimension.

Electromagnetic wave propagation along the axis of the waveguide is described by the wave equation, which is derived from Maxwell's equations, and where the wavelength depends upon the structure of the waveguide, and the material within it ( air, plastic, vacuum, etc.

The United States Navy is also using linear induction motors in the Electromagnetic Aircraft Launch System that will replace traditional steam catapults on future aircraft carriers.

* Global Electromagnetic Spectrum Information System ( GEMSIS ): DISA is ensures spectrum access for warfighters.

Immunity tests ensure that a product is immune to common electrical signals and Electromagnetic interference ( EMI ) that will be found in its operating environment, such as electromagnetic radiation from a local radio station or interference from nearby products.

* Electromagnetic emissions: It is possible to capture the electromagnetic emissions of a wired keyboard from up to away, without being physically wired to it.

Elves is an acronym for Emissions of Light and Very Low Frequency Perturbations from Electromagnetic Pulse Sources.

* Electromagnetic brakes are likewise often used where an electric motor is already part of the machinery.

Blue Nine refers to a project which produced the AN / FPS-79 Tracking Radar Set built by General Electric, used with the 466L Electromagnetic Intelligence System ( ELINT ); US Air Force.

Electromagnetic Suspension ( EMS ) is the magnetic levitation of an object achieved by constantly altering the strength of a magnetic field produced by electromagnets using a feedback loop.

* Electromagnetic radiation was the first source of energy used for spectroscopic studies.

Electromagnetic interference divides into several categories according to the source and signal characteristics.

Electromagnetic Pulse, EMP, also sometimes called Transient disturbance, arises where the source emits a short-duration pulse of energy.

* Electromagnetic source imaging

Electromagnetic interference ( or EMI, also called radio frequency interference or RFI when in high frequency or radio frequency ) is disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source.

Electromagnetic radiation is emitted by a light source and linearly polarized by a polarizer.

* 1889, " On the Electromagnetic Effects due to the Motion of Electrification through a Dielectric ", Phil. Mag. S. 5 27: 324.

Dynamic magnetic fields may be a different issue, however ; correlations between electromagnetic radiation and cancer rates have been postulated due to demographic correlations ( see Electromagnetic radiation and health ).

Linear induction motors have also been used for launching aircraft, the Westinghouse Electropult system in 1945 was an early example and the Electromagnetic Aircraft Launch System ( EMALS ) was due to be delivered in 2010.

Electromagnetic induction is the production of an electric current across a conductor moving through a magnetic field.

Electromagnetic launchers such as launch loops might be feasible with current technology.

When it came to deriving the electromagnetic wave equation from displacement current in his 1865 paper A Dynamical Theory of the Electromagnetic Field, he got around the problem of the non-zero divergence associated with Gauss's law and dielectric displacement by eliminating the Gauss term and deriving the wave equation exclusively for the solenoidal magnetic field vector.

Electromagnetic induction is proportional to the intensity of the current and voltage in the conductor which produces the fields and to the frequency.

Electromagnetic propulsion ( EMP ), is the principle of accelerating an object by the utilization of a flowing electrical current and magnetic fields.

In part VI of his 1864 paper " Electromagnetic theory of light ", Maxwell combined displacement current with some of the other equations of electromagnetism and obtained a wave equation with a speed equal to the speed of light.

Electromagnetic pulses and voltage spikes from whatever cause can also damage electricity infrastructure and electrical devices.

Observation is typically made via different ' channels ' of the Electromagnetic spectrum, in particular, the Visible and Infrared portions.

Electromagnetic ( EM ) surveys can be used to detect a wide variety of base metal sulphide deposits via detection of conductivity anomalies which can be generated around sulphide bodies in the subsurface.

* M. Kobayashi, A. Shamaly, Minimal Electromagnetic coupling for massive spin-two fields, Phys.