We don't claim a stronger field is absorbed deeper into tissue
Unconfirmed
A frequent line is that a stronger or higher-intensity field penetrates deeper into the body, as if it forces its way through tissue. When we describe reach, we mean geometry, not the field pushing through a barrier.
Why we leave it out
At the low frequencies a PEMF device uses, tissue is nearly transparent to the magnetic field. Skin, muscle, and bone barely absorb or block it, which is exactly why non-invasive magnetic stimulation works at all. A higher peak or a larger coil keeps the field above a usable level farther from the surface, and that's greater reach, not deeper absorption. We measure that reach in open air and describe it as geometry.
The field is strongest right at the coil and weakens with distance in every direction. On the on-axis dipole model the report uses, it reaches half its peak strength at about three quarters of a coil radius from center and one tenth at about two radii. A larger coil holds the field up farther out.
