^* As mentioned before, the seven fundamental units are the kilogram (of mass); the meter (of length); the second (of time); the ampere (of electrical current); the kelvin (of temperature); the candela (of luminous intensity); and the mole (of molecular amount). There are a range of what are called “derived units” to supplement these—such as the coulomb (electrical charge); the newton (force); the pascal (pressure); the farad (electrical capacitance); and some fifteen more, including the popular tesla, which, though defining an obscure property called the “magnetic flux density,” memorializes one of science’s most popular recent scientists, Nikola Tesla. He won this honor in 1960, seventeen years after his death.