Physics Van 3-site Navigational Menu

Physics Van Navigational Menu

Q & A: compass semantics

Learn more physics!

Most recent answer: 10/22/2007
Q:
My sonís third grade teacher and I are having a disagreement regarding compass reading. Her test question was this: Q - If you are facing north what direction is on your right? A - North East, according to the teacher. I say the correct answer is East and if she wanted the answer of North East she should have asked "If you are facing North what intermediate direction is on your right?" Is it not standard compass reading to say that East is right and North East is upper right? An answer with a source would be greatly appreciated.
- Wendi Coley (age 34)
Barcelona Hills Elementary School, Mission Viejo, CA , USA
A:
Wendi-

Your question is really less about compasses than about what people usually mean by the phrase "on your right". I think most people would use the phrase the same way you did, meaning "directly on your right", rather than the way the teacher did, meaning "a bit to the right of the previous direction".

If the teacher meant, instead of what she asked, "what is the direction on the compass which is the next one to the right of North", there is still a problem. There are infinitely many directions between North and East on a compass, some of which have names, like North-Northeast, and East-Northeast, which are in between North and Northeast, and in between East and Northeast, respectively. They are abbreviated NNE and ENE, and are commonly used in navigation. To have picked "Northeast" among all the other possible directions is random and arbitrary.

I hope this verbal argument didnít take too much time away from whatever science the school might, we hope, have taught.

Mike W. (and Tom J.)

(published on 10/22/2007)

Follow-up on this answer.