Electromagnetic pickups convert the vibration of the steel strings into signals, which are fed to an amplifier through a cable or radio transmitter.

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.

Electromagnetic waves can have different frequencies ( and thus wavelengths ), giving rise to various types of radiation such as radio waves, microwaves, infrared, visible light, ultraviolet and X-rays.

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.

* Radio Frequency, i. e., radio waves of the Electromagnetic spectrum

* Electromagnetic interference, also known as radio frequency interference

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 shielding that blocks radio frequency electromagnetic radiation is also known as RF shielding.

Electromagnetic waves, such as light, and gravitational waves exhibit polarization ; sound waves in a gas or liquid do not have polarization because the medium vibrates only along the direction in which the waves are travelling.

* Electromagnetic waves in a cylindrical waveguide

Electromagnetic waves can be imagined as a self-propagating transverse oscillating wave of electric and magnetic fields.

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

Electromagnetic waves as a general phenomenon were predicted by the classical laws of electricity and magnetism, known as Maxwell's equations.

Electromagnetic waves were analysed theoretically by James Clerk Maxwell in 1864.

* 1888 / 89, " Electromagnetic waves, the propagation of potential, and the electromagnetic effects of a moving charge ", The Electrician.

Electromagnetic radiation ( sometimes abbreviated EMR ) takes the form of self-propagating waves in a vacuum or in matter.

Electromagnetic waves propagate more slowly in a medium than in free space, so a wave in a medium will have a larger number of waves than a wave of the same frequency propagating over the same distance in free space.

* Electromagnetic waves and circular dichroism: an animated tutorial

* 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.

* David Reiss, " Electromagnetic surface waves ".

* Wait, J. R., " Electromagnetic surface waves ", Advances in Radio Research, 1, New York, Academic Press, 1964, pp. 157-219.

* Electromagnetic waves do not pass through conductors, but rather, they are reflected.

Electromagnetic waves occur in the ionosphere and magnetosphere as well as the Earth's outer core.

Electromagnetic waves may also be generated by earthquakes ( see seismo-electromagnetics ).

Electromagnetic waves behave in this same way, although it is harder to see.

Electromagnetic waves are also two-dimensional transverse waves.

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 units are part of a system of electrical units based primarily upon the magnetic properties of electric currents, the fundamental SI unit being the ampere.

Note: Electromagnetic radiated and conducted emissions are controlled regardless of their origin within the system, subsystem, or equipment.

Electromagnetic methods that are used for geophysical survey include transient electromagnetics and magnetotellurics.

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

; Electromagnetic tablets: Wacom's are one example of a graphics tablet that works by generating and detecting an electromagnetic signal: in the Wacom design, the signal is generated by the pen, and detected by a grid of wires in the tablet.

University of Tehran is appointed as a Center of Excellence ( fa: قطب علمی ) by Iran's Ministry of Science and Technology in the fields of " Evaluation and improvement of irrigation networks ", " Breeding and Biotechnology of trees ", " Farming, Grading and Biotechnology ", " Applied Electromagnetic Systems ", " Land Logistics ", " Sustainable Urban Planning and Development ", " Architectural Technology ", " Biological Control of Pests and Plant Diseases ", " Rural Studies and Planning ", " High-Performance Materials ", " Control and Intelligent Processing ", " Sustainable Management of Watershed ", " Applied Management of Fast Growing Wood Species ", " Surveying and Disaster Management ", " Engineering and Infrastructure Management ", " Oil and Gas ". This appointment is based on national standing based on research achievements and invested funding in the mentioned topics. Fifteen percent of the country ’ s Centers of Excellence, as recognized by the government, are located at the University of Tehran, which along with more than 40 research centers ensure UT ’ s commitment to research.

Electromagnetic waves are one of the best known and most commonly encountered forms of radiation that undergo scattering.

Electromagnetic aircraft catapults are planned, including onboard future U. S. Gerald R. Ford class aircraft carriers.

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.

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 plasma propulsion and supersonic flight without shock wave through flow control by MHD force field are studied in a new laboratory running with private funds, called LAMBDA λ ( Laboratory for Applications of MHD in Bitemperature Discharges to Aerodynamics ).

Electromagnetic cavities are represented by potential wells, also called boxes, which can be of limited or unlimited depth V < sub > 0 </ sub >.

Electromagnetic metamaterials are represented by different classes, as follows:

Electromagnetic bandgap structured ( EBG ) metamaterials are designed to prevent the propagation of an allocated bandwidth of frequencies, for certain arrival angles and polarizations.

The Virtual Institute for Artificial Electromagnetic Materials and Metamaterials ” Metamorphose VI AISBL ” is a non-profit international association whose purposes are the research, the study and the promotion of artificial electromagnetic materials and metamaterials.

Electromagnetic catapults are also anticipated to require significantly less maintenance through the use of solid state components.

They are a class of Electromagnetic metamaterials.

Electromagnetic pulse weapons are also quite common and have almost exactly the same function, but they are smaller-scale and " DEMP " ( destructive electromagnetic pulse ) weapons also damage organics, unlike ion cannons.