Em Drive Theory
The EM drive is an object composed by a Magnetron feeding a tapered resonant cavity whose area is greater at one end. Both ends of the cavity are sealed. When the Magnetron is turned on, the EM drive manifests a thrust toward the smaller end of the cavity. Nothing is emitted outside. Mainstream Physics is reluctant to recognize the EM drive as valid as it appears to break the law of conservation of momentum For this reason EM drive caused discussions, theories more or less exotic, and skepticisms. But the experiments seem to confirm it works. Here I discuss a simple theory in the framework of classical physics.