Early life. Ferdinand Magellan was born about 1480 to a noble family in Portugal. As a boy, he served the queen of Portugal as a page, and studied cartography and navigation tenaciously.
There are seven fundamental units: the metre, kilogram, second, ampere, kelvin, candela, and mole; and two supplementary units: the radian and the steradian. All other units are derived by multiplication or division of these units without the use of numerical factors. SI units in Medicine Expand. International System of Units n. Abbr. SI. A complete, coherent system of units used for scientific work, in which the fundamental quantities are length, time, electric current, temperature, mass, luminous intensity, and amount of substance. Also called International System. SI unit. Any of the units of measure in the International System.
SI is an abbreviation for system international unit. Find out what SI stands for in math with help from an experienced math professional in this free video clip. Expert: Charlie Kasov Filmmaker: Victor Varnado Series Description: Math is a subject that is looked at as complicated by many, but it really isn't as scary as you might think.