perusmittayksikköjä

Perusmittayksikköjä, or fundamental units, are the basic units of measurement in a system of units. They are chosen such that any other unit in the system can be derived from them. The choice of fundamental units is not unique and depends on the system of units being used. In the International System of Units (SI), the fundamental units are the meter (m) for length, the kilogram (kg) for mass, the second (s) for time, the ampere (A) for electric current, the kelvin (K) for thermodynamic temperature, the mole (mol) for amount of substance, and the candela (cd) for luminous intensity. These units are defined in such a way that they are independent of each other and can be used to measure any physical quantity. The use of fundamental units allows for consistency and precision in scientific measurements, as they provide a common reference point for all measurements.