Aclinic Line, the magnetic equator, along which the needle always remains horizontal. In physics, magnetism is a phenomenon by which materials exert an attractive or repulsive force on other materials. ...
A series or succession of ancestors or descendants of a given person; a family or race; as, the ascending or descending line; the line of descent; the male line; a line of kings.
{Line of dip} (Geol.), a line in the plane of a stratum, or part of a stratum, perpendicular to its intersection with a horizontal plane; the line of greatest inclination of a stratum to the horizon.
{Line of force} (Physics), any line in a space in which forces are acting, so drawn that at every point of the line its tangent is the direction of the resultant of all the forces.
The magnetic equator, or the line at which the attraction of both magnetic poles is equal.
Along the aclinicline, a compass needle swinging vertically will settle in a horizontal position.
Magnetic equator, an imaginary line near the Equator, where a compass needle balances horizontally, the attraction of the north and south magnetic poles being equal.