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).

When you enter text in Microsoft Excel, it is positioned horizontally by default. However, you may want to rotate text to add visual impact to a spreadsheet or a presentation. Excel has several tools ...

Nagoya University scientists in Japan and colleagues at Yale University in the US have uncovered details of how the bacterial propeller, known as the flagellum, switches between counterclockwise and ...

Materials react differently to electric and magnetic fields, and these reactions are known as electromagnetic responses. In ...