Magnetic Compass
A magnetic compass is a navigation tool that uses the Earth's magnetic field to determine direction. It consists of a magnetized needle that aligns itself with the Earth's magnetic field and points towards magnetic north. The magnetic compass is an essential instrument for pilots, as it provides a reliable means of determining direction, even in the absence of other navigational aids. However, it is subject to errors caused by magnetic deviation, which is the difference between magnetic north and true north, as well as other factors such as aircraft interference and variation caused by changes in the Earth's magnetic field over time.
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