Teaching Compass Turning Error
I have, in the past, taught that this error is caused by the compass needle losing its best alignment with the Earth's magnetic field line of flux (gauss line)while the aircraft is banked, and that the needle will seek out another "best alignment" but need help in best explaining why the compass LEADS on some headings (North where I come from) and lags on others (South, ditto.). What is different about the two? why don't they both lead or lag? How best to explain it?
Thanks
DH