Scientists have uncovered a new explanation for how swimming bacteria change direction, providing fresh insight into one of ...

In a “normal” electrocardiogram (ECG), the transition of the QRS axis in the precordial leads occurs between leads V 3 and V 4 (i.e., there is a dominant S in V 3 and a dominant R in V 4).

Researchers have unseated a previous theory for the mechanism underlying bacterial flagella movement, changing our ...

Most spiral galaxies rotate with their arms trailing the direction of spin, a characteristic consistent with current astronomical models. The perceived rotational direction (clockwise or ...

Usually, tornadoes in the U.S. rotate counterclockwise. Coriolis force, imparted due to the Earth’s rotation, causes air around low centers to circulate counterclockwise in the northern hemisphere.