Making measurements and interpreting their results are the most fundamental activities in experimental science. The International System of Units, universally abbreviated SI (from the French Le Systeme International d'Unites), is the modern metric system used in all scientific measurement. The SI was established in 1960 by the 11th General Conference on Weights and Measures (CGPM). The CGPM is an intergovernmental organization created by a diplomatic treaty called the Meter Convention (Convention du Metre, often called the "…showed first 75 words of 480 total…

…showed last 75 words of 480 total…example: Therefore, using scientific notation, the diameter of a red blood cell is 6.5 x 10-3 cm, the distance from the earth to the sun is 1.5 x 108 km and the number of molecules in 1 g of water is 3.34 x 1022. A final note, in scientific notation, the base numeral is always represented as a single digit followed by decimals if necessary. Therefore, the number 0.0065 is always represented as 6.5 x 10-3, never as 0.65 x 10-2 or 65 x 10-4.