Science Equipment

Technical Information
SI Base units
Quantity Name of Base unit Unit Symbol
length metre m
mass kilogram kg
time second s
electric current ampere A
thermodynamic temperature kelvin K
amount of substance mole mol
luminous intensity candela cd
SI Derived Units
Quantity Unit Name Unit Symbol Expression in terms of SI base units
force Newton N m kg s -2
energy joule J m 2 kg s -2
power watt W m 2 kg s -3
pressure, stress pascal Pa m -1 kg s -2
electric potential volt V m 2 kg s -3 A -1
electric charge coulomb C s A
electric flux coulomb C s A
magnetic flux weber Wb m 2 kg s -2 A -1
magnetic flux density tesla T kg s -2 A -1
electric resitance ohm Ω m 2 kg s -3 A 2
capacitance farad F m -2 kg -1 s 4 A 2
inductance henry H m 2 kg s -2 A -2
Celsius temperature degree Celsius ºC K
frequency hertz Hz s -1
luminous flux lumen lm cd sr
illuminance lux lx m -2 cd sr
activity (of a radionuclide) Becquerel Bq s -1
absorbed dose gray Gy m 2 s -2
dose equivalent sievert Sv m 2 s -2
torque newton metre N m m 2 kg s -2
electric field strength volt per metre V/m m kg s -3 A -1
magnetic field strength ampere per metre A/m m -1 A
thermal conductivity watt per metre kelvin W m -1 k -1 m kg s -3 K -1
luminance candela per square metre cd/m 2 m -2 cd
Page 116 Stuart Science Equipment Catalogue