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一、磁罗经的磁差、自差校正(一)磁罗经的磁差地球是一个大的磁体,在其周围存在着地球磁场(地磁场)。如果把一个条形或针形磁体悬挂起来,使它能在水平面上自由转动,就可以观察到:当它静止时,总是一个磁极指北,另一个磁极指南。我们把指北的一个磁极称为磁北极,用N 表示;把指南的一个磁极称为磁南极,用S 表示。根据磁极间同性相斥、异性相吸的原理,可以认为,在地理北极附近存在着地磁场的磁南极(S),在地理南极附
First, the magnetic compass by the magnetic difference, self-correction (a) magnetic compass magnetic difference The Earth is a large magnet, there is the Earth’s magnetic field around it (geomagnetic field). If a bar or needle magnet is suspended so that it can rotate freely in a horizontal plane, it can be observed that when it is at rest, there is always one north pole and the other pole guide. We refer to a north pole as a magnetic north pole, denoted by N; one pole of the guideline is a south pole, denoted S. According to the principle of mutual repulsion between polarities and attraction of the opposite sex, it can be considered that there is a magnetic south pole (S) with a geomagnetic field near the geographical north pole,