In this paper, we use Fourier transformation to analyse the spectrum of the finite-length harmonic wave train, and point out that the relationship between frequency width and continuance of a wave train obeys the indeterminate relation in quantum mechanics.

The paper studies the meeting of different wave trains and concludes,by means of cal-culation,that the general light source cannot produce observable light interferance.

All numerical experiments reveal that,the condensation heating can firstly induce cyclonic anomaly nearby the heating region in the mid-low troposphere,then the anomaly propagates northeastward,and the wave train forms in mid-high latitudes finally,which indicates the northeastward dissipation of latent heat energy.