Coherence

Coherence, coherency, or coherent may refer to the following,:

Physics

  • Coherence (physics), an ideal property of waves that enables stationary (i.e. temporally and spatially constant) interference
  • Coherence (units of measurement), a derived unit that, for a given system of quantities and for a chosen set of base units, is a product of powers of base units with no other proportionality factor than one
  • Coherence time, the time over which a propagating wave (especially a laser or maser beam) may be considered coherent; the time interval within which its phase is, on average, predictable
  • Mathematics

  • Coherence (philosophical gambling strategy), a concept in Bayesian statistics
  • Coherence (signal processing), a statistic that can be used to examine the relation between two signals or data sets
  • Coherence (statistics), a property of self-consistency across a set of assessments, or the strength of association between two series
  • Coherence condition in category theory, a collection of conditions requiring that various compositions of elementary morphisms are equal
  • Coherence (film)

    Coherence is an American science fiction thriller film directed by James Ward Byrkit in his directorial debut. The film had its world debut on September 19, 2013 at the Austin Fantastic Fest and stars Emily Baldoni as a woman who must deal with strange occurrences following a comet sighting.

    Plot

    Three couples — Emily and Kevin, Hugh and Beth, Amir and Laurie — attend a dinner party hosted by their friends Mike and Lee. At the party, they mention the passing comet which has been on the news for a while. Everyone notices their cell phone and laptop losing receptions. Emily talks about strange phenomena recorded in Finland after a comet passed in 1923. Hugh wants to contact his brother, a physicist who had warned him about odd effects from the comet.

    A blackout then occurs. Hugh and Amir head to another house a few blocks away still has power for a working telephone. After power is restored, Hugh and Amir return, carrying a box which they had found at the other house. Hugh explains that he saw in the other house a dinner table set exactly like theirs. In the box are a ping pong paddle and several photos. The group is alarmed to find that each photo has one of them in it and a number on the back. Amir notes that the photo of him was taken that night, inside the house, and Emily realizes that the numbers are written in her handwriting.

    Coherence (UPNP)

    Coherence is an open-source license multimedia computer application developed under the MIT system. As a stand-alone application, Coherence performs as a DLNA/UPnP Media Server. Coherence has an in-built capability to export local files or online media via its back ends to other UPnP clients. With supported clients, Coherence functions as a controllable DLNA/UPnP MediaRenderer. Coherence can also function as a Python framework to enable other applications to access digital-living networks and resources.

    Standalone mode

    Coherence has a comprehensive plug-in architecture which enables it to export via its many back ends to UPnP/DLNA clients: local and/or remote media. In conjunction with GStreamer or Rhythmbox, Coherence forms a controllable DLNA/UPnP Media Renderer.

    Coherence features many back-ends as :

  • Ampache (AmpacheStore)
  • Apple Trailers (AppleTrailersStore)
  • Axis Cam (AxisCamStore)
  • Elisa (ElisaMediaStore)
  • Flickr (FlickrStore)
  • local filesystem (FSstore)
  • Gallery2 (Gallery2Store)
  • Podcasts:

    PLAYLIST TIME:

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    Coherent to Showcase Silicon Photonics Based 1.6T Transceiver Modules Incorporating Next-Generation ICS for Low Power Consumption

    Nasdaq Globe Newswire 31 Mar 2025
    Silicon photonics-based 1.6T-DR8 transceiver module using a Marvell� Ara 3nm optical digital signal processor (DSP) at OFC 2025 ... .

    Coherent Demonstrates Industry’s First 400G Differential Electro-Absorption Modulated Laser

    Nasdaq Globe Newswire 27 Mar 2025
    Coherent Corp.is demonstrating the industry's first 400 Gb/s Differential Electro-absorption Modulated Laser (D-EML) at OFC 2025 ... .

    Coherent Introduces Optical Transceivers Optimized for Optical Circuit Switch Applications

    Nasdaq Globe Newswire 27 Mar 2025
    The introduction of a set of pluggable optical transceivers optimized for use in data centers that incorporate optical circuit switches (OCSs) ... .
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