magnetic direction

magnetic direction

[mag′ned·ik də′rek·shən]
(geodesy)
Horizontal direction expressed as angular distance from magnetic north.

magnetic direction

A direction measured clock-wise with reference to magnetic north. True north is equal to magnetic north +/− variation. See magnetic course.
References in periodicals archive ?
For example, evidence from honeybees that approach novel environments from a fixed magnetic direction suggests that magnetic cues may help to organize spatial behaviour, possibly by standardizing the vantage point for retinotopic maps in unfamiliar habitats (Collett & Baron 1994).
What was the magnetic direction of rocks at the time?
Modern EFIS will display a little arrow showing the wind relative to the airplane and a legend next to it with the magnetic direction and speed.
There is a specific mention of a magnetic direction finder - a compass - around 1040.
Such pinning of the magnetic direction is needed for the functioning of a special structure known as a spin valve, which is used in modern read heads of computer hard disks.
This precision tool simultaneously records drift angle and magnetic direction of the hole.
The bias provided by a small permanent magnet, located near the recording surface, is an order of magnitude too weak to change the magnetic direction.
As a result, an unknown portion of the magnetic rock gradually changed to realign itself with the prevailing magnetic direction, jeopardizing geologists' ability to chart plate movement.
These are called Bloch walls or Neel walls, depending on the plane in which the rotation of magnetic direction takes place.