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).
Introduction: Clockwise and counterclockwise rotations of QRS transition zone in horizontal plane are long recognized electrocardiogram (ECG) findings, but data on their prognostic values are sparse.
Researchers have made a reversible rotor that sits on a ruthenium atomic cal bearing. Nature Nanotechnology – Controlled clockwise and anticlockwise rotational switching of a molecular motor The ...
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