31. The unit of time in the International System of Units ( SI ) is the second . .. 32. The numerical value of the Planck constant depends entirely on the system of units used to measure it. 33. International System of Units ( SI) 34. These are used in calculations, because they form " coherent " ( or nearly so ) systems of units . 35. It would establish the International System of Units as the official units of measurement within the state of Oregon. 36. The gal is not part of the International System of Units ( known by its ISO 80000-3 : 2006. 37. The International System of Units standardized its unit of time, the second, on the properties of cesium in 1967. 38. The �ngstr�m is internationally recognized, but is not a formal part of the International System of Units ( SI ). 39. Under this system, which would become the International System of Units ( SI ), the ohm is a derived unit. 40. Scientific systems of units are a refinement of the concept of weights and measures developed long ago for commercial purposes.
