Sorry about the delay, my password got messed up and they haven't responded to my request for help. Anyway
The curve came from data in the 1018 thread you referred me to . I converted the units into CGS and graphed them in excel. That is why I wanted to double-check the values I got.
As for information, I need the info for a question I posted in an adjacent thread. I'm looking to put a covering around the sides, not the poles, on a 1 inch cubic n38 magnet, with the intention of containing all the flux not on, or in front of, the poles.
I tried looking at the cap formulas in Moskowitz's book, but they didn't involve size. That is why I'm asking here.
thanks for the help