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  2. Wave - Wikipedia

    en.wikipedia.org/wiki/Wave

    A standing wave, also known as a stationary wave, is a wave whose envelope remains in a constant position. This phenomenon arises as a result of interference between two waves traveling in opposite directions. The sum of two counter-propagating waves (of equal amplitude and frequency) creates a standing wave. Standing waves commonly arise when ...

  3. Mechanical wave - Wikipedia

    en.wikipedia.org/wiki/Mechanical_wave

    Mechanical waves can be produced only in media which possess elasticity and inertia. There are three types of mechanical waves: transverse waves, longitudinal waves, and surface waves. Some of the most common examples of mechanical waves are water waves, sound waves, and seismic waves. Like all waves, mechanical waves transport energy.

  4. Radio - Wikipedia

    en.wikipedia.org/wiki/Radio

    An antenna farm hosting various radio antennas on Sandia Peak near Albuquerque, New Mexico, United States. Radio is the technology of communicating using radio waves. [1] [2] [3] Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz).

  5. Cymatics - Wikipedia

    en.wikipedia.org/wiki/Cymatics

    Resonance made visible with black seeds on a harpsichord soundboard Cornstarch and water solution under the influence of sine wave vibration A demonstration of sand forming cymatic patterns on a metal plate. Cymatics (from Ancient Greek: κῦμα, romanized: kŷma, lit. 'wave') is a subset of modal vibrational phenomena.

  6. Reflectometry - Wikipedia

    en.wikipedia.org/wiki/Reflectometry

    The waves reflected at the interface travel back to the transducer, then the acoustic impedance of the sample is determined by measuring the amplitude of the wave reflected from the propagation medium/sample interface. [4] From the reflected wave, it is possible to determine some properties of the sample that is desired to characterize.

  7. List of physics mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_physics_mnemonics

    Once upon a time, the symbol E (for electromotive force) was used to designate voltages. Then, every student learned the phrase ELI the ICE man as a reminder that: For an inductive (L) circuit, the EMF (E) is ahead of the current (I)

  8. Wavenumber - Wikipedia

    en.wikipedia.org/wiki/Wavenumber

    In multidimensional systems, the wavenumber is the magnitude of the wave vector. The space of wave vectors is called reciprocal space. Wave numbers and wave vectors play an essential role in optics and the physics of wave scattering, such as X-ray diffraction, neutron diffraction, electron diffraction, and elementary particle physics.

  9. Wave action (continuum mechanics) - Wikipedia

    en.wikipedia.org/wiki/Wave_action_(continuum...

    This wind wave model generates forecasts of wave conditions through the use of wave-action conservation and the wind-field forecasts (from weather forecasting models). [1] In continuum mechanics, wave action refers to a conservable measure of the wave part of a motion. [2] For small-amplitude and slowly varying waves, the wave action density is ...