In one minute

Haisch, Rueda and Puthoff propose that inertia, the resistance of matter to acceleration, arises from interactions with electromagnetic vacuum fluctuations. Their 1994 model represents matter through hypothetical charged constituents that oscillate like tiny springs. They calculate the magnetic part of the Lorentz force on these constituents during constant proper acceleration (measured in the particle’s momentary rest frame), averaging over the fluctuating field. The resulting force is proportional to acceleration, with its proportionality coefficient interpreted as inertial mass. Its magnitude depends on an unspecified internal mass and a high-frequency interaction limit set by the constituents’ assumed Planck-scale size. This limit restricts the response of matter, not the vacuum spectrum itself. In the final force expression, the authors select the sign that opposes acceleration, consistent with the resistance they seek to explain.

Inertia as a zero-point-field Lorentz force