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  2. “Tracker” star Justin Hartley previews the case that haunts ...

    www.aol.com/lifestyle/tracker-star-justin...

    Related: Jensen Ackles to return for Tracker season 2: 'We got him,' says star Justin Hartley Part of what draws Colter back to the case is his complex relationship with the abductee’s sister ...

  3. News ticker - Wikipedia

    en.wikipedia.org/wiki/News_ticker

    An example of a television news ticker, at the very bottom of the screen. News ticker on a building in Sydney, Australia. A news ticker (sometimes called a crawler, crawl, slide, zipper, ticker tape, or chyron) is a horizontal or vertical (depending on a language's writing system) text-based display either in the form of a graphic that typically resides in the lower third of the screen space ...

  4. Tracker (American TV series) - Wikipedia

    en.wikipedia.org/wiki/Tracker_(American_TV_series)

    Release. February 11, 2024. (2024-02-11) –. present. (present) Tracker is an American action drama television series created by Ben H. Winters and based on the 2019 novel The Never Game by Jeffery Deaver. [1][2] The series stars Justin Hartley as Colter Shaw, a skilled survivalist and tracker who earns his living by assisting law enforcement ...

  5. 1948 Lake Mead Boeing B-29 crash - Wikipedia

    en.wikipedia.org/wiki/1948_Lake_Mead_Boeing_B-29...

    The system was known as "Sun Tracker", and to test it a plane capable of high-altitude flight followed by a rapid low-level flight was needed. The B-29 was a useful test platform as it was the first mass-produced aircraft with a pressurized cockpit, and after World War II there were many surplus B-29s available.

  6. Acoustic Doppler current profiler - Wikipedia

    en.wikipedia.org/wiki/Acoustic_Doppler_Current...

    An acoustic doppler current profiler (ADCP) is a hydroacoustic current meter similar to a sonar, used to measure water current velocities over a depth range using the Doppler effect of sound waves scattered back from particles within the water column. The term ADCP is a generic term for all acoustic current profilers, although the abbreviation ...

  7. NATO Joint Military Symbology - Wikipedia

    en.wikipedia.org/wiki/NATO_Joint_Military_Symbology

    NATO Joint Military Symbology is the NATO standard for military map symbols. Originally published in 1986 as Allied Procedural Publication 6 (APP-6), NATO Military Symbols for Land Based Systems, the standard has evolved over the years and is currently in its fifth version (APP-6D). The symbols are designed to enhance NATO 's joint ...

  8. Monopulse radar - Wikipedia

    en.wikipedia.org/wiki/Monopulse_radar

    Monopulse radar is a radar system that uses additional encoding of the radio signal to provide accurate directional information. The name refers to its ability to extract range and direction from a single signal pulse. Monopulse radar avoids problems seen in conical scanning radar systems, which can be confused by rapid changes in signal strength.

  9. Trackball - Wikipedia

    en.wikipedia.org/wiki/Trackball

    A trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of the ball about two axes—like an upside-down ball mouse with an exposed protruding ball. [1] Users roll the ball to position the on-screen pointer, using their thumb, fingers, or the palm of the hand, while using the fingertips to ...