Международная метрическая система измерений СИ International System of Units (SI) Derived units (of MEASUREMENT) F Systeme international dunites (SI)

Международная метрическая система измерений СИ International System of Units (SI) Derived units (of MEASUREMENT) F Systeme international dunites (SI)

Международная метрическая система измерений СИ International System of Units (SI) Derived units (of MEASUREMENT) F Systeme international dunites (SI) F Unites derivees D Internationales Einheitensystem (SI) D Abgeleitete Einheiten SI base unit Quantity Name Symbol length metre m mass kilogram kg time second s electric current ampere A thermodynamic temperature kelvin K amount of substance mole md luminous intensity candela cd Unit Relationship to Quantity Name Symbol SI base unit plane angle radian rad 1 rad 1 mm 1 rad 57295 779 51 frequency hertz Hz 1 Hz 1 s-1 force newton N 1 N 1 m kg s-2 pressure pascal Pa 1 Pa 1 m-1 kg s-2 power watt W 1 W 1 m2 kg s-3 electrical potential volt V 1 V 1 m2 kg s-3 A-1 Decimal multiples and submultiples of the base unit "metre" Unit Symbol m cm mm pm nm kilometre km 13 m 1000 m 1 000 000 mm Metre m 1 m 1 m 100 cm 1 000 mm 1 000 000 pm decimetre dm 10-1 m 01 m 10 cm 100 mm 100 000 pm centimetre cm 10-2 m 001 m 1 cm 10 mm 10 000 pm Millimetre mm 10-3 m 0001 m 01 cm 1 mm 1 000 pm 1 000 000 nm tenth millimetre 10-4 m 0000 1 m 01 mm 100 pm 100 000 nm hundredth millimetre 10-5 m 0000 01 m 001 mm 10 pm 10 000 nm Micrometre pm 10'6 m 0000 001 m 0001 mm 1 pm 1 000 nm tenth micrometre 10-7 m 0000 000 1 m 0000 1 mm 01 pm 100 nm hundredth micrometre 10-8 m 0000 000 01 m 0000 01 mm 001 pm 10 nm Nanometre nm 10-9 m 0000 000 001 m 0000 001 mm 0001 pm 1 nm Definition of the metre F Definition du metre D Meterdefinition "The metre is defined as the distance travelled by light in vacuum during a time of 1 299 792 458 of a second." 17th General Conference on Weights and Measures 1983. Reference temperature F Temperature de reference D Bezugstemperatur For measuring instruments and workpieces ISO R1 assesses this temperature is 20C. The temperature of 20C is assumed to be valid for any size material measure MEASUREMENT result etc. unless otherwise specified. MEASUREMENT tasks Inspecting F Controler D Prufen Determining whether a test object complies with specified requirements (e.g. as regards both dimensions and form). Measuring F Mesurer D Messen Obtaining a value (e.g. length value) measured by comparison against a master standard (e.g. material measure). Calibrating F Etalonner D Kalibrieren Establishing the actual deviation of a measuring instrument from desired value. This is usually done through MEASUREMENT operations. The result of a calibration is documented in the form of a calibration certificate and can be used later on for adjustment purposes for instance. WHAT IS KNOWN TESA Technology QUANTITIES AND UNITS