Force
Popular quickchoices:
dyne (dyn) <> newton (N)
kilogram-force (kgf) <> newton (N)
pound-force (lbf) <> newton (N)
poundal (pdl) <> newton (N)
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*SI (International System of Units):
A modern, coherent system of measurement units, built around seven base units. The SI is officially adopted by almost every country in the world.
*Metric system:
A system of measurement units based on a limited number of fundamental units, introduced by France in 1799. The metric system is the predecessor of the International System of Units (SI).