Wireless - Electromagnetic Spectrum

Electromagnetic Spectrum

See also: Spectrum management

Light, colors, AM and FM radio, and electronic devices make use of the electromagnetic spectrum. The frequencies of the radio spectrum that are available for use for communication are treated as a public resource and are regulated by national organizations such as the Federal Communications Commission in the USA, or Ofcom in the United Kingdom. This determines which frequency ranges can be used for what purpose and by whom. In the absence of such control or alternative arrangements such as a privatized electromagnetic spectrum, chaos might result if, for example, airlines didn't have specific frequencies to work under and an amateur radio operator were interfering with the pilot's ability to land an aircraft. Wireless communication spans the spectrum from 9 kHz to 300 GHz.

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Other articles related to "electromagnetic, spectrum, electromagnetic spectrum":

Index Of Physics Articles - A
... of Time (Hawking and Mlodinow book) A Different Universe A Dynamical Theory of the Electromagnetic Field A Large Ion Collider Experiment A New Theory of Magnetic Storms A Treatise on Electricity and. 215 meeting A dynamical theory of the electromagnetic field Aage Bohr Aaldert Wapstra Aaron Klug Aaron Lemonick Abbe prism Abbe sine condition Abdel-Moniem El-Ganayni Abdul Qadeer Khan Abdul Rasul (Iraqi scientist ... operator Angular size redshift relation Angular spectrum method Angular velocity Anharmonicity Anil Bhardwaj Animal echolocation Anirudh Singh Anisothermal ...
Cyber Electronic Warfare
... EW) is any military action involving the use of electromagnetic energy to control the domain characterized by the use of electronics and the electromagnetic spectrum to store, modify, and/or ... three activities are defined as follows Cyber electronic attack (cyber EA) is the use of electromagnetic energy to attack an adversary’s electronics and/or access to the electromagnetic ... means taken to protect electronics and/or access to the electromagnetic spectrum from any effects of friendly or enemy employment of cyber EW that degrades, neutralizes, or ...
Hyperspectral Imaging
... like other spectral imaging, collects and processes information from across the electromagnetic spectrum ... light in three bands (red, green, and blue), spectral imaging divides the spectrum into many more bands ... Hyperspectral sensors look at objects using a vast portion of the electromagnetic spectrum ...
Information Operations - Electronic Warfare (EW)
... refers to any action involving the use of the electromagnetic spectrum or directed energy to control the spectrum, attack an enemy, or impede enemy assaults ... the advantage of, and ensure friendly unimpeded access to, the EM spectrum ... disrupt, and exploit adversarial use of the EM spectrum while protecting friendly freedom of action in that spectrum ...