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Topic: Artificial horizon

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 Navigation - Wikipedia, the free encyclopedia
However, prior to the development and formulation of its key principles in the latter part of the 17th century by Isaac Newton and Gottfried Leibniz, tables of the sun's altitude during the year for a known port were used.
The sun's angle over the horizon at noon was measured, and compared to the known angle at the same date as the known port.
A sextant uses mirrors to measure the altitude of celestial objects with regard to the horizon.
en.wikipedia.org /wiki/Navigation   (2515 words)

 Artificial Hip
The two most common types of artificial hip prostheses used are cemented prostheses and uncemented prostheses.
The medical treatment can be a drug; a surgical device such as an artificial hip; a medical device such as an insulin pump; or a surgical technique.
Forty years later he is persuaded, despite having an artificial hip, to leave his now well-worn routines in NYC to see if he can find the tribesmen in the Amazon and New Guinea again.
www.prostheticscenter.com /artificial/artificialhip   (1314 words)

 Islands 2
However, in 1790 we find James aboard the sloop HMS Flint, cruising off the Isle of Wight, for a week’s trial of “Mortlock’s Artificial Horizon”, whereby a spirit level with appropriate adjusting screws was secured across the frame of a sextant.
On 22nd April 1791 James submitted a lengthy explanation of his invention to the Board of Longitude, which was, it may surprise some people to know, not solely concerned with timekeepers.
Unfortunately James was in competition with other projectors of artificial horizons (and of various improvements to compasses), and he does not seem to have received any award for his pains.
www.mortlock.info /encyclopedia/islands2.html   (3915 words)

 Flight - Visual Flight Rules Aircraft Wright Brothers Early Flying Machines Control Deck Feather   (Site not responding. Last check: 2007-11-01)
The alternative is to fly the aircraft primarily using feedback from onboard instruments such as an artificial horizon.
Except in the simplest aircraft, such as ultralight aicraft, hang gliders or balloons, a pilot almost always makes some reference to instruments to determine their exact speed or altitude.
The primary visual reference used is usually the appearance of the natural horizon or the ratio of visible sky to ground, when the pilot is looking straight ahead.
www.a-zofholidays.com /a2z/flights/flight.html   (8040 words)

 Attitude Indicator
The ATTITUDE INDICATOR shows the aircraft's position in relation to the earth's horizon.
The attitude indicator displays scales that allow the pilot to set climb/dive angles and bank angle (VERY important aspects of instrument flying).
The attitude indicator (AI), also often called the artificial horizon, is an instrument used in an aircraft to inform the pilot of the...
www.attitudeindicator.info   (279 words)

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