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  2. Inertial navigation system - Wikipedia

    en.wikipedia.org/wiki/Inertial_navigation_system

    An inertial navigation system (INS; also inertial guidance system, inertial instrument) is a navigation device that uses motion sensors (accelerometers), rotation sensors (gyroscopes) and a computer to continuously calculate by dead reckoning the position, the orientation, and the velocity (direction and speed of movement) of a moving object ...

  3. Nephoscope - Wikipedia

    en.wikipedia.org/wiki/Nephoscope

    Inventor. Carl Gottfrid Fineman, Louis Besson and Mikhail Pomortsev. A nephoscope is a 19th-century instrument for measuring the altitude, direction, and velocity of clouds, using transit-time measurement. This is different from a nephometer, which is an instrument used in measuring the amount of cloudiness.

  4. Surface feet per minute - Wikipedia

    en.wikipedia.org/wiki/Surface_feet_per_minute

    SFM is a combination of diameter and the velocity (RPM) of the material measured in feet-per-minute as the spindle of a milling machine or lathe. 1 SFM equals 0.00508 surface meter per second (meter per second, or m/s, is the SI unit of speed). The faster the spindle turns, and/or the larger the diameter, the higher the SFM.

  5. Download and install the AOL app on iOS

    help.aol.com/articles/aol-app-downloading-and...

    Learn more about the AOL app and download it from the App Store. The AOL app is available for iOS devices running iOS 12 or newer. 1. Open the App Store on your device. 2. Tap the Search icon. 3. Type "AOL" in the search field. 4. Tap Search. 5. Next to AOL: News Email Weather Video, tap Get. 6. Enter your Touch ID or Apple ID, if prompted. 7 ...

  6. Laser surface velocimeter - Wikipedia

    en.wikipedia.org/wiki/Laser_surface_velocimeter

    Laser surface velocimeter. A laser surface velocimeter (LSV) is a non-contact optical speed sensor measuring velocity and length on moving surfaces. Laser surface velocimeters use the laser Doppler principle to evaluate the laser light scattered back from a moving object. They are widely used for process and quality control in industrial ...

  7. Statcast - Wikipedia

    en.wikipedia.org/wiki/Statcast

    Trevor Story's 518-foot home run of July 12th, 2021, is the longest measured by Statcast.. The PITCHf/x system, first used in the 2006 MLB postseason, is a camera-based system that can measure the trajectory, speed, spin, break, and location of a pitched ball.

  8. Pitometer log - Wikipedia

    en.wikipedia.org/wiki/Pitometer_log

    This unit uses a mercury-based manometer to measure the difference in static and dynamic water pressure. Pitometer logs (also known as pit logs) are devices used to measure a ship's speed relative to the water. They are used on both surface ships and submarines. Data from the pitometer log is usually fed directly into the ship's navigation system.

  9. Accelerometer - Wikipedia

    en.wikipedia.org/wiki/Accelerometer

    Accelerometer. An accelerometer is a device that measures the proper acceleration of an object. [1] Proper acceleration is the acceleration (the rate of change of velocity) of the object relative to an observer who is in free fall (that is, relative to an inertial frame of reference). [2] Proper acceleration is different from coordinate ...