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 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 induction, where an electrical generator, dynamo or alternator transforms kinetic energy ( energy of motion ) into electricity.

The IEC charter embraces all electrotechnologies including energy production and distribution, electronics, magnetics and electromagnetics, electroacoustics, multimedia and telecommunication, as well as associated general disciplines such as terminology and symbols, electromagnetic compatibility ( by its Advisory Committee on Electromagnetic Compatibility, ACEC ), measurement and performance, dependability, design and development, safety and the environment.

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

* Electromagnetic compatibility, which studies the unintentional generation, propagation, and reception of electromagnetic energy

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

# Electromagnetic radiation, at the same or different wavelengths, i. e., frequencies, of energy received from an incident wave.

* Electromagnetic stress – energy tensor

* Electromagnetic energy

* Electromagnetic radiation and intensity of light: Electromagnetic radiation is a form of energy.

* Electromagnetic pulses ( EMP ) with electromagnetic energy distributed typically up to the 100 kHz and 1 MHz frequency range.

Electromagnetic waves with the energy of visible light or higher, such as ultraviolet light, X-rays and gamma rays are usually involved in such reactions.

Electromagnetic energy in this range can easily pass through the Earth's atmosphere and be observed from the Earth with little interference.

Electromagnetic radiation is a combination of oscillating electric and magnetic fields propagating perpendicular to each other through space and carrying energy from one place to another.

* Electromagnetic energy is in the form of electric charges, magnetic fields, and photons.

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

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 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 noise is produced in the source due to rapid current and voltage changes, and spread via the coupling mechanisms described earlier.

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

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.

These include MIL-S-901D – High Shock ( Sea Vessels ), MIL-STD-167B – Vibration ( Sea Vessels ), MIL-STD-810F – Field Environmental Conditions ( Ground Vehicles and Systems ), MIL-STD 461E / F – EMI / RFI ( Electromagnetic Interference / Radio Frequency Interference ), MIL-STD-740B – Airborne / Structureborne Noise, and TEMPEST – Telecommunications Electronics Material Protected from Emanating Spurious Transmissions.

:* electrical protection and safety including protection from lightning surges, AC power induction and faults, and Electromagnetic Interference ( EMI ), and DC power influences

* Conjugate matching versus reflectionless matching ( PDF ) taken from Electromagnetic Waves and Antennas

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 ).

The power was provided by a new 9-megajoule ( MJ ) prototype capacitor bank using solid-state switches and high-energy-density capacitors delivered in 2007 and an older 32-MJ pulse power system from the US Army ’ s Green Farm Electric Gun Research and Development Facility developed in the late 1980s that was previously refurbished by General Atomics Electromagnetic Systems ( EMS ) Division.

Electromagnetic radiation from high performance electrical motors has been claimed to be associated with some human ailments, but such claims are largely unsubstantiated except for extremely high exposures.

The plane wave spectrum arises naturally as the eigenfunction or " natural mode " solution to the homogeneous electromagnetic wave equation in rectangular coordinates ( see also Electromagnetic radiation, which derives the wave equation from Maxwell's equations in source-free media, or Scott ).

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.

Father of Electromagnetic TheoryA postcard from Maxwell to Peter Guthrie Tait | Peter Tait.

They had planned to go on the air on June 1 of that year, with studios in Everett and a sales office in Seattle, but kept getting bogged down by years of legal challenges from residents on Cougar Mountain who objected to the Electromagnetic radiation from an additional broadcaster.

Dr. Kassakian has been a member of the faculty of Electrical Engineering at the Massachusetts Institute of Technology since 1973 and has served as Director of the MIT Laboratory for Electromagnetic and Electronic Systems from 1991 to 2009.

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 disturbances in the EM field of a conductor will no longer be confined to the surface of the conductor and will radiate away from it.

In December 2004, a pan-European study named REFLEX ( Risk Evaluation of Potential Environmental Hazards from Low Energy Electromagnetic Field ( EMF ) Exposure Using Sensitive in vitro Methods ), involving 12 collaborating laboratories in several countries showed some compelling evidence of DNA damage of cells in in-vitro cultures, when exposed between 0. 3 to 2 watts / kg, whole-sample average.