The angular difference between true north and magnetic north is known as the declination and is marked in degrees on your map as shown in Figure 6.7. Depending on where you are, the angle between true ...

It's time to recalibrate the navigation systems on ships, airplanes, and (given the time of year) Santa's sleigh: the ...

“When we travel, we have a map – which tells us where ... angle of Earth’s surface relative to its magnetic lines – and magnetic declination – the difference in direction between the ...

the exact nature of this 'map' has been the subject of ongoing debate. In a carefully designed experiment, warblers were exposed to artificially altered magnetic inclination and declination values ...