The D'Arsonval/Weston galvanometer movement was invented by French physicist Jacques-Arsène d'Arsonval in the late 19th century. Later, American inventor and engineer Edward Weston improved upon the design, resulting in the commonly used D'Arsonval/Weston galvanometer movement.
The D'Arsonval/Weston galvanometer movement works by converting electrical current into mechanical motion. When an electrical current is passed through a coil of wire suspended in a magnetic field, it creates a force that causes the coil to move. This movement is then measured and displayed on the galvanometer's scale.
A galvanometer is a type of instrument used to detect and measure small amounts of electrical current. It is commonly used in scientific experiments and electrical circuits to monitor the flow of electricity and to measure the strength of the current.
The D'Arsonval/Weston galvanometer movement has several advantages over other types of galvanometers. It is highly sensitive and can accurately measure small currents, it has a linear scale that makes it easy to read and interpret results, and it is relatively inexpensive to manufacture.
Since its invention in the late 19th century, the D'Arsonval/Weston galvanometer movement has undergone several improvements and modifications. These include the addition of a mirror and scale for more precise readings, the use of different materials for the coil and suspension system, and the incorporation of digital displays. However, the basic principle and design of the D'Arsonval/Weston galvanometer movement remains the same.