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  2. Electromagnetic spectrum - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_spectrum

    A diagram of the electromagnetic spectrum, showing various properties across the range of frequencies and wavelengths. The electromagnetic spectrum is the full range of electromagnetic radiation, organized by frequency or wavelength. The spectrum is divided into separate bands, with different names for the electromagnetic waves within each band.

  3. Mathematical descriptions of the electromagnetic field

    en.wikipedia.org/wiki/Mathematical_descriptions...

    These equations taken together are as powerful and complete as Maxwell's equations. Moreover, the problem has been reduced somewhat, as the electric and magnetic fields together had six components to solve for. [1] In the potential formulation, there are only four components: the electric potential and the three components of the vector potential.

  4. List of physics mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_physics_mnemonics

    When a variable with an exponent or in a function is covered, the corresponding inverse is applied to the remainder, i.e. = and = ⁡. More Magic Triangle image mnemonics in the style of a cheat-sheet for high-school physics – in the SVG file, hover over a symbol for its meaning and formula.

  5. Electromagnetic field - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_field

    An electromagnetic field (also EM field) is a physical field, mathematical functions of position and time, representing the influences on and due to electric charges. [1] The field at any point in space and time can be regarded as a combination of an electric field and a magnetic field .

  6. Spectral band - Wikipedia

    en.wikipedia.org/wiki/Spectral_band

    A spectrum with various bands. Spectral bands are regions of a given spectrum, having a specific range of wavelengths or frequencies. Most often, it refers to electromagnetic bands, regions of the electromagnetic spectrum. [1] More generally, spectral bands may also be means in the spectra of other types of signals, e.g., noise spectrum.

  7. Orders of magnitude (frequency) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    Electromagnetic – infrared light used in thermal imaging, for example for night vision: 31.5 THz: Electromagnetic – peak of black-body radiation emitted by human body: 10 14: 100 THz: 400 THz to 790 THz: Electromagnetic – visible light, from red to violet: 10 15: 1 petahertz (PHz) 2.47 PHz: Electromagnetic – Lyman-alpha line: 10 16: 10 ...

  8. Quantization of the electromagnetic field - Wikipedia

    en.wikipedia.org/wiki/Quantization_of_the...

    These expansion functions depend on the coordinates of a single particle. The coefficients multiplying the basis functions are interpreted as operators and (anti)commutation relations between these new operators are imposed, commutation relations for bosons and anticommutation relations for fermions (nothing happens to the basis functions ...

  9. C band (IEEE) - Wikipedia

    en.wikipedia.org/wiki/C_band_(IEEE)

    The C band is a designation by the Institute of Electrical and Electronics Engineers (IEEE) for a portion of the electromagnetic spectrum in the microwave range of frequencies ranging from 4.0 to 8.0 gigahertz (GHz). [1] However, the U.S. Federal Communications Commission C band proceeding and auction, designated 3.7–4.2 GHz as C band. [2]

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