The geologic record also shows that the strength of the magnetic field varies widely in time, and fluctuates wildly during field reversals, sometimes dropping to zero gauss strength; ie: the field vanishes, disappears!

• 地质记录也表明磁场强度在时间上普遍变化，在磁场逆转期间广泛波动，有时降到零高斯强度；也就是：磁场消失不见了！