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  2. Amplitude - Wikipedia

    en.wikipedia.org/wiki/Amplitude

    The amplitude of a non-periodic signal is its magnitude compared with a reference value. There are various definitions of amplitude (see below), which are all functions of the magnitude of the differences between the variable's extreme values. In older texts, the phase of a periodic function is sometimes called the amplitude. [1]

  3. Glossary of physics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_physics

    By definition, it is the amount of energy gained by the charge of a single electron moved across an electric potential difference of one volt. electronegativity A chemical property that describes the tendency of an atom or a functional group to attract electrons (or electron density) towards itself. electronics

  4. Crest and trough - Wikipedia

    en.wikipedia.org/wiki/Crest_and_trough

    Crest and trough in a wave. A Crest point on a wave is the highest point of the wave. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point of the wave.

  5. Amplitude (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Amplitude_(disambiguation)

    Amplitude is a measure of a periodic variable in classical physics. Amplitude may also refer to: In mathematics and physics. Jacobi amplitude of Jacobi ...

  6. Amplituhedron - Wikipedia

    en.wikipedia.org/wiki/Amplituhedron

    The scattering amplitude can thus be thought of as the volume of a certain polytope, the positive Grassmannian, in momentum twistor space. [ 1 ] When the volume of the amplituhedron is calculated in the planar limit of N = 4 D = 4 supersymmetric Yang–Mills theory , it describes the scattering amplitudes of particles described by this theory.

  7. Opposite - Wikipedia

    en.wikipedia.org/wiki/Opposite

    The term antonym (and the related antonymy) is commonly taken to be synonymous with opposite, but antonym also has other more restricted meanings. Graded (or gradable) antonyms are word pairs whose meanings are opposite and which lie on a continuous spectrum (hot, cold).

  8. Contronym - Wikipedia

    en.wikipedia.org/wiki/Contronym

    Hindi: कल and Urdu: کل (kal) may mean either "yesterday" or "tomorrow" (disambiguated by the verb in the sentence).; Icelandic: fram eftir can mean "toward the sea" or "away from the sea" depending on dialect.

  9. Radar signal characteristics - Wikipedia

    en.wikipedia.org/wiki/Radar_signal_characteristics

    This can be adapted for systems that lack a coherent transmitter, such as time-domain pulse-amplitude radar. Constant False Alarm Rate, a form of Automatic Gain Control (AGC), is a method that relies on clutter returns far outnumbering echoes from targets of interest. The receiver's gain is automatically adjusted to maintain a constant level of ...