Measuring Magnetic Field Strength - PC Interface

have you ever read howard johnstons book ? i want to make a array to do some testing and see what i can find out

Ok Please no flames....

This may sound stupid. But if you can set what your trying to do up so what your measuring is pointing up. You could use the old Paper/iron powder trick they showed us all in school.

You could at least see the pattern your getting and how Physically big it is.

Just a thought...Probably a dumb one though.

bill12780

Not stupid at all - I did that with a piece of glass and iron filings to observe the pattern - but need to be able measure (and record) relative flux field strength at varying distances and angles.

what you did not see is the vortexes on the corners they are hard to measure and are where all the real power in the magnet comes from. the more corners the better the feilds are. as well this is where the high end gause is in the magnet.

this book is worth the read as i found more info in these pages then most other books combined.

see the picture below

<img src="http://rdw.magnacoaster.com/magna/vortex.jpg">

Thank you. I downloaded the book and am reading it now. It has already expanded my understanding of magnetic fileds.