The evolution of elementary particles and the cosmic spectral shift

Tang Hsiao Wei's hypothesis concerning the rest masses of elementary particles as increasing exponential functions of time is analyzed, and a new hypothesis including the use of sinusoidal functions of time is proposed to replace Tang's formula. The following points are brought to attention: (1) Since natural evolution involves both creation and annihilation processes, the sinusoidal periodical relationship seems to be more representative of the nature of the Universe. (2) The sinusoidal function rather than the ever-increasing exponential function seems more plausible from the standpoint of mass-energy conservation law, without the need for compensatory interactions as a remedy. (3) The new formula closely approximates Tang's relationship in the linear region and shows its validity in correlation with observational data. (4) The new hypothetical formula would provide explanation for blue shift equally well in addition to red shift, if such a blue shift is detected.