Millijoule to Erg Converter

A millijoule (mJ) is a unit of energy equal to one thousandth of a joule (10⁻³ J). It represents small amounts of energy, typically found in electronic circuits, small mechanical systems, and precision energy measurements.

The millijoule became important with the development of precision electronics and small-scale energy measurements. It was particularly useful for measuring energy in electronic pulses, small mechanical impacts, and low-energy physical and chemical processes.

Millijoules are used in electronics for measuring pulse energy, in precision mechanics for small impact measurements, in laser technology for pulse energy, and in materials testing for small-scale energy absorption measurements.

An erg is a unit of energy in the centimeter-gram-second (CGS) system, equal to 10⁻⁷ joules. It represents the work done by a force of one dyne acting through a distance of one centimeter.

The erg was developed as part of the CGS unit system in the late 19th century. It was widely used in physics and engineering before the adoption of SI units, particularly in mechanics, thermodynamics, and electromagnetic calculations where CGS units were preferred.

Ergs are rarely used in modern applications, appearing mainly in historical scientific literature and some specialized physics contexts. They've been largely replaced by joules in all practical applications, though they may still appear in some older scientific references and specialized calculations.