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from article Sextant
Marine sextant.
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from article Sextant
Periscopic sextant for use in aircraft.
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from article Air-traffic control
Terminal radar controller's plan view display. Aircraft positions are shown by radar returns. Display is centered on primary airport with parallel and intersecting runways. Range rings are spaced 5 mi (9 km) apart. Airspace within boundary and above…
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from article Philosophy of science
Pulpit Rock Park in Colorado Springs, Colorado, photographed with camera equipment sensitive to infrared wavelengths of light outside of the visible portion of the electromagnetic spectrum that humans can perceive. The "invisible" light is rendered…
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from article Philosophy of science
Bust of the Greek polymath Aristotle. (Credit: Photos.com/Getty Images)
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from article Surveillance radar
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from article Inertial navigation system
Elementary accelerometer.
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from article Inertial navigation system
Computation of distance by two integrations. Integration of acceleration gives velocity; integration of velocity gives distance.
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from article Inertial navigation system
Schematic of a three-gimbal platform.
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from article Inertial navigation system
Strap-down inertial navigation system. (After A. Lawrence, Modern Inertial Technology, 2d ed., Springer, New York, 1998)
