The International System of Units (SI) is the modern form of the metric system, and it is the international standard for measurement used by scientists.
The International System of Units is a decimal system based on seven base units, which are defined by internationally agreed standards. The SI is used by scientists, engineers, and other professionals all over the world.
The meter is the base unit of length. It is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
The kilogram is the base unit of mass. It is defined as the mass of the International Prototype of the Kilogram, which is a cylinder of platinum-iridium kept at the International Bureau of Weights and Measures in France.
The second is the base unit of time. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium-133 atom.
complete question: what is the international system of measurement used by scientists