INTERNATIONAL SYSTEM OF UNITS (SI)
Terms of Base Terms of Other Quantity Name Symbol Units SI Units Plane angle radian rad m/m Frequency hertz Hz s\11 Force newton N kg m/s2 J/m Pressure pascal Pa kg/m s2 N/m2 Energy; work joule J kg m2/s2 N m Power watt W kg m2/s3 J/s Electric charge coulomb C A s Elect...
Amount of substance Mole molLuminous intensity Candela cdTABLE D.2 Some Derived SI UnitsExpression in Expression inTerms of Base Terms of OtherQuantity Name Symbol Units SI UnitsPlane angle radian rad m/mFrequency hertz Hz s\11Force newton N kg m/s2 J/mPressure pascal Pa kg/m s2 N/m2...
能量单位：焦耳 符号J 电能单位：焦耳（J）或者“千瓦.时（kw.h）”或者“度” 1kw.h=1度
The SI unit of magnetic flux equal to 108 maxwells. spellmanhv.com 磁通量的国际计量单位,等于 108 麦克斯韦。 spellmanhv.cn The SI unit of measurement for frequency, named in honor of Heinrich Hertz who discovered radio waves. spellmanhv.com 测量频率的标准国际单位,为纪念海因里希?
AmountUnit nameUnit symbolComposition FrequencyHertzHz1Hz=1s-1 ForceNewtonN1N=1kg･m/s2 Pressure, stressPascalPa1Pa=1N/m2 Energy, work, amount of heatJouleJ1J=1N･m Power, radiant fluxWattWW=1J/s Electric charge, amount of electricityCoulombC1C=1A･s ...
candela: The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540x1012 Hz and that has a radiant intensity in that direction of 1/683 watt per steradian. [16th CGPM (1979), Resolution 3] List Units: A B C D E-F G...
mHz to 5 GHz. We make time interval measurements according to customer’s need, with a lower limit of approximately one nanosecond. Furthermore, MIKES has a transmitter for time code and precise 25 MHz frequency for those near the Helsinki metropolitan area who need precise time and frequency....
The fraction 1/273.16 of the thermodynamic temperature of the triple point of water. Candela (cd) Unit for luminous intensity. A source that emits monochromatic radiation of frequency 540 × 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. Mole (mol...
A unit of measurement is a quantifiable language that describes the magnitude of the physical quantity. The SI units define standard units for the measurement of all physical quantities.