The SI unit of electric charge, equal to the amount of charge that flows when one ampere of electric current runs for one second.
Named after French physicist Charles-Augustin de Coulomb (1736-1806), who discovered the inverse-square law of electrostatics. The unit was officially adopted by international agreement in the late 1800s.
Coulomb discovered his famous law of electric force using a tiny device called a torsion balance so sensitive it could detect the push-pull of individual charged balls—essentially building the world's first atomic-scale scale!
Complete word intelligence in one call. Free tier — 50 lookups/day.