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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. Wave speed - Wikipedia

    en.wikipedia.org/wiki/Wave_speed

    Wave speed is a wave property, which may refer to absolute value of: phase velocity , the velocity at which a wave phase propagates at a certain frequency group velocity , the propagation velocity for the envelope of wave groups and often of wave energy, different from the phase velocity for dispersive waves

  4. Crest and trough - Wikipedia

    en.wikipedia.org/wiki/Crest_and_trough

    A trough is the opposite of a crest, so the minimum or lowest point of the wave. When the crests and troughs of two sine waves of equal amplitude and frequency intersect or collide, while being in phase with each other, the result is called constructive interference and the magnitudes double (above and below the line).

  5. File:Commutative diagram of harmonic wave properties.svg

    en.wikipedia.org/wiki/File:Commutative_diagram...

    English: This diagram describes the relationships between the various properties of harmonic waves: frequency, period, wavelength, angular frequency, and wavenumber. The properties are organized in three axes: linear properties on the left, and their angular equivalents on the right;

  6. Wave - Wikipedia

    en.wikipedia.org/wiki/Wave

    A soliton or solitary wave is a self-reinforcing wave packet that maintains its shape while it propagates at a constant velocity. Solitons are caused by a cancellation of nonlinear and dispersive effects in the medium. (Dispersive effects are a property of certain systems where the speed of a wave depends on its frequency.)

  7. Group velocity - Wikipedia

    en.wikipedia.org/wiki/Group_velocity

    Propagation of a wave packet demonstrating a phase velocity greater than the group velocity. This shows a wave with the group velocity and phase velocity going in different directions. [1] The group velocity is positive (i.e., the envelope of the wave moves rightward), while the phase velocity is negative (i.e., the peaks and troughs move ...

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  9. File:Diagram of wave terms.svg - Wikipedia

    en.wikipedia.org/wiki/File:Diagram_of_wave_terms.svg

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