True Magnetic And Compass North

If the magnetic north line is 120 to the left of the true north line then it means that the magnetic north is 120 west of true north. Integrating the compass with the gps means that the phone will always show the map in the correct orientation no matter how the user is holding the phone source. Let me show you an example.

Top True Magnetic And Compass North, Magnetic declinations vary from place to place depending on the intensity of the earths magnetic fields.

True magnetic and compass north. Geographical lines do exist where true north and magnetic north are. Magnetic compasses at the historic london area known as the home of the prime meridian were said to have pointed directly at the north geographic pole for the first time in 360 years. Stand on the meridian line in september with a compass and for the first time in the history of the royal observatory it will point true north. A magnetic compass most certainly does not point to the magnetic north pole.

Because of magnetic variation which is the ever changing influence of the earths magnetic field and magnetic deviation which is. In most practical cases heading north is as simple as reading a compass and setting out. In the worlds of sailing and aviation though navigation can get a little more complicated. The angle a compass needle makes between true north and magnetic north is called declination.

Any reasonably accurate mapping of the geomagnetic field shows lines of force along which a magnetic needle will align itself and they wander about creating patterns significantly different from longitude like lines. The magnetic north line can also be indicated on the left of the right hand side of the true north. This video discusses the origin of cardinal directions north south east and west the compass and true north vs magnetic north. As the magnetic field changes all the time so does declination at any given location.

The compass aligns the phones built in gps maps with magnetic north. For instance if you hold out a compass in new zealand magnetic north will be about 20 degrees east of true north whereas the declination in los angeles is 12 degrees. For true north and magnetic north to come together at this point is a really special occurrence and hasnt happened for hundreds of years. Magnetic declination or magnetic variation is the angle on the horizontal plane between magnetic north the direction the north end of a magnetized compass needle points corresponding to the direction of the earths magnetic field lines and true north the direction along a meridian towards the geographic north polethis angle varies depending on position on the earths surface and.