navigation from ancient to modern. navigation the way of charting a course and the methods used to...
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NavigationFrom Ancient to Modern
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NAVIGATION
the way of charting a course and the methods used to find the way to a specific location.
Viking Navigation with a Sun Board
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TOOLS USED TO NAVIGATE
Compass wherever you stand on Earth, the needle on
the compass will point toward the Earth’s pole.
The needle is a small metal magnet on a frictionless pivot point attracted to the magnetic pull from the planet’s core.
Used to navigate land and underwater.
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COMPASS
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TOOLS USED TO NAVIGATE
Chronometer Portable clock of great
accuracy used on determining longitude at sea.
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CHRONOMETER
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TOOLS USED TO NAVIGATE
A sextant determines latitude by measuring the position of the Sun and stars based on the instruments arc which is 1/6 of a circle.
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SEXTANT
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TOOLS USED TO NAVIGATE
Radio Beacons 1921 First electronic aid to navigation
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TOOLS USED TO NAVIGATE
Radar System of determining and
displaying the distance of an object by measuring the time it takes for a radio signal echo to return.
“radio detecting and ranging”
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RADAR
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TOOLS USED TO NAVIGATE
Loran Long range navigation,
electronic timing device which measures the difference in arrival time of radio signals from pairs of land stations.
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LORAN
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TOOLS USED TO NAVIGATE
Satellite Navigation System Orbiting satellites emit a signal
at a precise frequency and a receiver on a ship measures the frequency shift to determine position to within 30 m.
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SATALLITES
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TOOLS USED TO NAVIGATE
Global Positioning System Worldwide radio-navigation using
24 satellites and 5 ground-based monitoring stations used as reference to calculate position within a few meters and advanced to within a few centimeters.
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GPS SATALLITES
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GPS
Precise measurements of distance between a receiver and four satellites will pinpoint the exact location of the receiver with GPS.
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GPS
GPS can be used to measure the velocity of a moving receiver as well as its location.
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GPS
Oceanographers are developing new technologies for using GPS in underwater applications.
A major problem in using GPS underwater is that GPS signals are radio waves, which are quickly absorbed by water.
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SONAR
Used for underwater applications
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RV New Horizon