aclinic line

Want to know what an aclinic line or natural bridge is?

Along the aclinic line, the earth's magnetic field is horizontal.

The locus of the points having zero dip is called the magnetic equator or aclinic line.

Aclinic Line, or Magnetic Equator, an imaginary, irregular line circling the earth near the geographical equator.

Please copy/paste the following text to properly cite this HowStuffWorks article: "Aclinic Line" 30 March 2008.

An isoclinic line connects points of equal magnetic dip, and an aclinic line is the isoclinic line of magnetic dip zero.

At the north magnetic pole, the needle points straight down; at the south magnetic pole, it points straight up; at the aclinic line (magnetic equator), it remains horizontal.