enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Shake (unit) - Wikipedia

    en.wikipedia.org/wiki/Shake_(unit)

    A nuclear fission reaction. The process takes about 1 shake. A shake is an informal metric unit of time equal to 10 nanoseconds, or 10 −8 seconds. [1] It was originally coined for use in nuclear physics, helping to conveniently express the timing of various events in a nuclear reaction.

  3. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    A unit of time is any particular time interval, used as a standard way of measuring or expressing duration. The base unit of time in the International System of Units (SI), and by extension most of the Western world , is the second , defined as about 9 billion oscillations of the caesium atom.

  4. Pyramid (image processing) - Wikipedia

    en.wikipedia.org/wiki/Pyramid_(image_processing)

    Pyramid, or pyramid representation, is a type of multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated smoothing and subsampling. Pyramid representation is a predecessor to scale-space representation and multiresolution analysis.

  5. Fast wavelet transform - Wikipedia

    en.wikipedia.org/wiki/Fast_wavelet_transform

    The fast wavelet transform is a mathematical algorithm designed to turn a waveform or signal in the time domain into a sequence of coefficients based on an orthogonal basis of small finite waves, or wavelets. The transform can be easily extended to multidimensional signals, such as images, where the time domain is replaced with the space domain.

  6. Giza pyramid’s nearly perfect alignment may have involved a ...

    www.aol.com/article/news/2018/02/20/giza-pyramid...

    Scholars have spent decades delving into what techniques the builders used to position the pyramid’s so they face almost absolute north, south, east & west. Giza pyramid’s nearly perfect ...

  7. Orders of magnitude (time) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(time)

    10 −14 qs: The length of one Planck time (t P = / ≈ 5.39 × 10 −44 s) [3] is the briefest physically meaningful span of time. It is the unit of time in the natural units system known as Planck units. 10 −30: quectosecond: qs Quectosecond, (quecto-+ second), is one nonillionth of a second 10 −27: rontosecond: rs

  8. In-phase and quadrature components - Wikipedia

    en.wikipedia.org/wiki/In-phase_and_quadrature...

    I(t) and Q(t) are the time-series data for the in-phase and quadrature components. S is the signal . IQ data has extensive use in many signal processing contexts, including for radio modulation, software-defined radio, audio signal processing and electrical engineering. I/Q data is a two-dimensional stream.

  9. ΔT (timekeeping) - Wikipedia

    en.wikipedia.org/wiki/ΔT_(timekeeping)

    Universal Time is a time scale based on the Earth's rotation, which is somewhat irregular over short periods (days up to a century), thus any time based on it cannot have an accuracy better than 1 in 10 8. However, a larger, more consistent effect has been observed over many centuries: Earth's rate of rotation is inexorably slowing down. This ...