The zero degree isogonic line

 

There are many wonderful things about crossing the country in a small plane that only a pilot can love, and here’s one. Just east of Memphis is the zero degree isogonic line, which we crossed en route. What’s the zero isogonic line and who cares? At most places on Earth true north (the direction to the north axis of rotation) and magnetic north (the direction to the north magnetic pole) differ. How much they differ is a matter of where one is on Earth. The zero degree isogonic line is a line running north/south on which true north and magnetic north are the same direction. The line for the western hemisphere runs east of Memphis and we crossed it. As for who cares, I suspect that only I do. If you wonder what it looks like at the zero isogonic line:

Yes, I know this is super geeky.

 

Posted by faber at Monday ~ December 12, 2003 |

Category: christmas 2003, flying, travel

 

“Comments”

Cindy Douglas 23/12/03 - 2:53 pm

Dear Brenda & Ted:

Super photos! Very down to earth, literally! You are so talented to be able to provide such a detailed commentary as you go. Looks like you are enjoying yourselves immensely. I like that Elvis bowling ball. Cindy

Leave a Reply

 

Name
Mail
Website