Takahisa OkinoApplied Mathematics Department, Science & Technology Faculty, Oita University, 700 Danoharu, Oita City, Oita Prefecture, Japanokino@oita-u.ac.jpInternational Journal of Fundamental Physical Sciences (IJFPS)https://www.fundamentaljournals.org/index.php/ijfps13110-162231-818610.14331/ijfps.2023.330158https://doi.org/10.14331/ijfps.2023.330158https://creativecommons.org/licenses/by-nc/4.0/The paper discusses the essential role of probability interpretation in quantum mechanics, addressing long-standing questions surrounding Schrödinger's cat. It provides a derivation of Schrödinger’s equation from the diffusion equation, offering a framework grounded in causality from Newtonian mechanics. The author presents theoretical evidence supporting wave function collapse, the matter wave hypothesis, and limitations of particle discrimination. The study confirms that microparticles composed of fewer than ~770 atoms exhibit wave nature, explains interference patterns, and introduces the concept of a minimum time unit (t₀) affecting quantum interpretations.Matter WaveDiffusion EquationSchrödinger's EquationWave Function CollapseMinimum Time in Physics