I am trying to expand the following eaquation to plain english. Can anyone help?

 

The magnetic field on the z axis of a solenoid (in Gaussian units) is:

B=[2\pi(N/L)I/c][sin A_2-sin A_1], where A_i is the angle between a line perpendicular to the axis of the solenoid at one end and a point on the z axis.

 

If you write this in terms of z and expand, you can use Legendre polyomials to find the field off the axis and the dipole moment of the solenoid.

 

Can someone just make this equation simpler?

Can someone make this simpler?

 

The magnetic field on the z axis of a solenoid (in Gaussian units) is:

B=[2\pi(N/L)I/c][sin A_2-sin A_1], where A_i is the angle between a line perpendicular to the axis of the solenoid at one end and a point on the z axis.