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 ...

A MOF enhanced tribovoltaic nanogenerator directly charges a supercapacitor, creating a compact self-charging system that powers devices through sliding motion in a screen time management prototype.

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 ...

Abstract: Low-noise current readout circuits are essential in modern scientific and industrial applications ranging from nanopore sensing to quantum systems. This tutorial-style paper presents a ...

As the story goes, the rock band AC/DC took its name from a label on an old sewing machine in the Young brothers’ home. It must have meant that the machine could run on either alternating-current or ...

The battery as we know it today was an invention of Italian chemist and physicist Alessandro Volta. He witnessed electricity splitting water into its constituent elements of oxygen and hydrogen and ...