Relativistic Mass Increase and Doppler Shift Without Special Relativity
The relativistic mass-increase and Doppler shift formulae are derived solely from the conservation laws and the assumption of symmetry between a wave source and a wave receiver which have no preferred frame of motion. The Lorentz Transformation is not used. This simple result makes a clear separation between the experimentally proven effects of mass increase and Doppler shift, and the controversial time and length contractions. It also adds further experimental evidence of the wave structure of matter discussed in earlier works. The origin of the mass increase and Doppler effect is attributed to the advanced and retarded waves in the quantum wave structure of the electron. The present result thus has great significance for the philosophy of physics.