|Arthur Holly Compton physics
When a photon hits an electron, the photon transfers energy to the electron, is deflected and shifts to a lower wavelength. Arthur Holly Compton did the math in which each scattered photon hits only one electron, showing that a photon behaves as a particle, not merely as an electromagnetic wave.
A photon’s energy is directly related to its frequency. A particle’s mass is equivalent to an energy by Einstein’s formula, E = mc2. The Compton wavelength of a particle is the wavelength of a photon whose energy is equivalent to the particle’s mass. The Compton wavelength is the amplitude of the particle’s Zitterbewegung oscillation.
When an unstoppable bullet hits an impenetrable wall, the theory disintegrates. There are no such things. Let us rephrase the problem. Our paths shouldn’t depend on which of us is the more stubborn. No bullet’s unstoppable and no wall’s impenetrable. Maybe the bullet can turn corners and maybe the wall is not complete. A little creative thinking, a little kindness and respect, more altruism and less egotism, can stretch the possibilities.