Table shows various units (kilogram, metre, ampere etc.) and corresponding physical quantities (measurements). Both basic SI and selected derivated units are presented.

BETA TEST VERSION OF THIS ITEM

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

Name | Symbol | Measure |

metre | $m$ | length |

kilogram | $kg$ | mass |

second | $s$ | time |

ampere | $A$ | electric current |

kelvin | $K$ | thermodynamic temperature |

mole | $mol$ | amount of substance |

candela | $cd$ | luminous intensity |

Name | Symbol | Measure |

radian | $rad$ | angle |

steradian | $sr$ | solid angle |

hertz | $Hz$ | frequency |

newton | $N$ | force |

pascal | $Pa$ | pressure, stress |

joule | $J$ | energy, work, heat |

watt | $W$ | power, radiant flux |

coulomb | $C$ | electric charge or quantity of electricity |

volt | $V$ | voltage (electrical potential) |

farad | $F$ | capacitance |

ohm | $\Omega$ | resistance, impedance, reactance |

siemens | $S$ | electrical conductance |

weber | $Wb$ | magnetic flux |

tesla | $T$ | magnetic flux density |

henry | $H$ | inductance |

Celsius degree | $^{\circ}C$ | temperature relative to 273.15 K |

lumen | $lm$ | luminous flux |

lux | $lx$ | illuminance |

becquerel | $Bq$ | radioactivity (decays per unit time) |

gray | $Gy$ | absorbed dose (of ionizing radiation) |

sievert | $Sv$ | equivalent dose (of ionizing radiation) |

katal | $kat$ | catalytic activity |

square meter | $m^2$ | area |

cubic meter | $m^3$ | volume |

meter per second | $\frac{m}{s}$ | velocity |

meter per square second | $\frac{m}{s^2}$ | acceleration |

kilogram per cubic meter | $\frac{kg}{m^3}$ | density |

newton per square meter | $\frac{N}{m^2}$ | specific gravity |

volt per meter | $\frac{V}{m}$ | magnitude of the electric field |

ampere per meter | $\frac{A}{m}$ | magnitude of the magnetic field |

- To determine the quantity/value/amount of the selected physical quantity (e.g. mass), we need
**a standard definition of the unit**relative to which we compare quantities. We call this standard**a unit of measure**. - Theoretically, there is freedom in the selection of units of measurement, but for practical reasons, they are chosen in such a way that the usage of them is practical and easy.
- In order to standardize, units of measurement are grouped in the so-called
**measurement unit systems**. Currently, in most regions of the world, the applicable unit of measurement system is**SI system**. - An example of a unit of measure is a kilogram. When making a mass measurement, we determine
**how many times heavier**or**how many times lighter**the**examined body is relative to the prototype body with known mass of 1kg**. Perhaps the most direct example of such a measurement is the use of a weighing scale, where we place the examined object on one side and prototype weight on another. - In the case of a kilogram, the unit of measure is defined by a physically existing object, but this is not always possible. For example, one second is defined as a time equal to 9 192 631 770 periods corresponding to the transition between two levels F=3 and F=4 basic state S
_{1/2}of atom ces^{133}Cs.

Tags:

Tags to Polish version:

This is permalink. Permalink is the link containing your input data. Just copy it and share your work with friends:

So this is static version of this website.

This website works

Please enable JavaScript.