How would surface currents would be affected if earth did not rotate?

The Coriolis Effect. If the Earth did not rotate on its axis, the atmosphere would only circulate between the poles and the equator in a simple back-and-forth pattern. Click the image for a larger view. ... But because the Earth rotates, circulating air is deflected.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

resonant frequency