MKS system means

The MKS system is a metric system of units that stands for the combination of three base units: meter (m), kilogram (kg), and second (s). It is an extension of the metric system, which is based on the International System of Units (SI).

Here's a brief explanation of each base unit in the MKS system:

Meter (m): It is the unit of length or distance. One meter is defined as the length traveled by light in a vacuum during a time interval of 1/299,792,458 of a second.

Kilogram (kg): It is the unit of mass. The kilogram is defined as the mass of the International Prototype of the Kilogram, a specific platinum-iridium cylinder kept at the International Bureau of Weights and Measures in France. However, note that there have been discussions and plans to redefine the kilogram in terms of fundamental constants.

Second (s): It is the unit of time. The second is defined based on the properties of the cesium-133 atom. Specifically, it is the duration of 9,192,631,770 cycles of the radiation corresponding to the transition between two energy levels of the cesium atom.

The MKS system is commonly used in scientific and engineering fields, particularly in physics and related disciplines. It provides a coherent set of units for measuring quantities such as length, mass, time, velocity, acceleration, force, energy, and power.