THE ordinary dynamometer is as well adapted for direct as for alternate current measurements; but while it is generally regarded as the best available instrument for alternate currents, its use with ...

If the current flows in only one direction it is called direct current, or d.c. Batteries and solar cells supply d.c. electricity. A typical cell or battery may supply 1.5 V. The diagram shows an ...

Transcranial direct current stimulation (tDCS) also called microcurrent electrical stimulation or cranioelectrotherapy stimulation (CES), is a technique that applies extremely weak electrical currents ...