The spectrum of harmonic wavelet is more box like than other wavelet, At the same time it has following advantages:existing certain function expression;

Time--harmonic wave equations of electromagnetic potential in chiral media are given, the dyadic Greens function is solved by using dyadic algebraic method, then.

Splanchnic function loses harmonic motion, sense semiotic criterion last a period of time is longer, and at improving hind also but reappearance.