A mirror galvanometer is an ammeter that indicates it has sensed an electric current by deflecting a light beam with a mirror. The beam of light projected on a scale acts as a long massless …

This device, which Thomson dubbed the mirror galvanometer, could detect signals one thousand times fainter than other receivers. Thanks to Thomson's invention, the weak currents through...

Lord Kelvin's Mirror Galvanometer. Michael Kay, University of Leeds PhD student, explains how the mirror galvanometer, invented by William Thomson (Lord Kelvin) to detect and measure …

To achieve higher sensitivity to detect extremely small currents, the mirror galvanometer substitutes a lightweight mirror for the pointer. It consists of horizontal magnets suspended …

Jun 5, 2015 · The mirror galvanometer consists of a coil which is suspended by means of silken threads. A small mirror is attached to the coil. The light from a source is made to fall on the …

When an electric current bends the magnet/mirror, the light bends along with it and is measured by the scale. The mirror reflects that light back onto the scale. Hence, an ammeter called a …

A mirror galvanometer is a particularly sensitive electrical indicating instrument and was used to detect the extremely weak currents received through long submarine cables. Instead of a …

Apr 1, 2008 · The mirror galvanometer is one of several instruments used for measuring small amounts of electrical current. Its use in psychological research led to greater understanding of …

…his telegraph receiver, called a mirror galvanometer, for use on the Atlantic cable. (The device, along with his later modification called the siphon recorder, came to be used on most of the …

The mirror galvanometer was invented by William Thomson (later Baron Kelvin of Largs) and patented in 1858. It is a particularly sensitive electrical indicating instrument and was used to …