What is permanent magnet B field equation?

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SUMMARY

The discussion focuses on calculating the magnetic field (B) between two permanent magnets positioned 10mm apart, each with a core intensity of 1.3T and a surface intensity of 0.6T. The B field at a distance of 5mm from each magnet can be approximated using the formula for the electric field (E) of a uniformly charged disk, with the charge density set to 13,000 gauss. The calculation involves doubling the result for two magnets. A specific formula for calculating Tesla (B) in this context is sought for practical applications.

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ShahinPhD
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I'm looking for an equation to calculate Tesla (B) between two permanent magnets with distance of 10mm.

Magnets are located in front of each other; disk shape and intensity of each is 1.3T in its core, and 0.6T on surface, so I'm interested how to calculate the B between them in distance of 5mm from each one (10mm between 2 magnets).

Please help me to find proper calculation.
Thanks in advanced.
 
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If the magnets are much longer than 5mm, the B field 5mm from the face of one magnet is the same as the E field 5mm from a uniformly charged disk with charge density
\sigma=M where M=13,000 gauss (all in Gaussianl units). Just double it for two magnets.
 
Thanks for your fast response.
It seems OK, but in a short form I'm looking for a formula to calculate the Tesla in distance between two magnets.
Suppose we have some parameters: dimensions of magnets, power of magnets in core and surface, distance between them; so how can we use a formula to calculate intensity between magnets in some distance?

(Frankly I'm looking for a formula to use for my calculations)
 

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The on axis formula for E due to a uniformly charged disk is in most (even elementary) textbooks.
 

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