If magnetic compass is not affected by any magnetic field other than the Earth’s, which statement is TRUE ___.
A: Compass error and variation are equal
B: Compass north will be true north
C: Variation will equal deviation
D: There will be no compass erro
A: Compass error and variation are equal
B: Compass north will be true north
C: Variation will equal deviation
D: There will be no compass erro
举一反三
- Deviation is the angle between the（）. A: true meridian and the axis of the compass card B: true meridian and the magnetic meridian C: magnetic meridian and the axis of the compass card D: axis of the compass card and the degaussing meridia
- 14. The magnetic compass magnets are acted on by the horizontal component of the Earth's total magnetic force. This magnetic force is GREATEST at the ______.
- With the help of suspended magnetic element, a compass can aid people by ______ of the horizontal component of Earth's magnetic field.
- Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）. A: Heeling magnet B: Flinders bar C: Fore-and-aft magnets D: All of the above can be set on magnetic east or magnetic west heading
- Isogonic lines are lines on a chart indicating （）. A: points of equal variation B: points of zero variation C: the magnetic latitude D: magnetic di