Four Crucial Experimental Schemes: Systematic Verification of the Size-Ether Dual Medium Model

The size-ether dual medium model proposes an alternative explanation for the four fundamental interactions, the nature of light, and quantum randomness within the framework of classical mechanics, yet its core predictions remain to be experimentally verified. This paper designs four progressive crucial experiments: (1) an ultrasonic polarization experiment to verify that longitudinal waves can exhibit polarization characteristics; (2) a single-atom serial decay experiment with a strict single-chamber, single-trap, single-particle design to test whether decay is a collective emergent effect; (3) a Venus orbital gravitational constant measurement experiment to adjudicate between the medium gravity paradigm and the spacetime curvature paradigm; (4) a radio wave dual-mirror beam splitting experiment using mercury-plated mirrors to directly split the wavefront and test the divisibility of photons. The four experiments form a complete verification system from the dimensions of optics, nuclear physics, gravitation, and quantum properties, and the results can directly determine the rationality of the classical medium unified theory.