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international system of units [2]click to hear

Decimal system established by the 11th General Conference on Weights and Measures (GCWM) in 1960 and used by many countries.
international system of units [2] becquerel degree Celsius pascal mole newton kelvin kilogram meter measurement of electric resistance measurement of electric potential difference measurement of luminous intensity measurement of power measurement of energy measurement of electric current measurement of electric charge measurement of frequency measurement of radioactivity measurement of Celsius temperature measurement of pressure measurement of force measurement of amount of substance measurement of thermodynamic temperature measurement of mass measurement of length

becquerel click to hear

Radioactivity of a substance in which one atom disintegrates per second.

degree Celsius click to hear

Division into 100 parts of the difference between the freezing point of water (0°C) and its boiling point (100°C) at standard atmospheric pressure.

pascal click to hear

Uniform pressure exerted on a flat surface of 1 m2 with a force of 1 newton.

mole click to hear

Quantity of matter equal to the number of atoms in 0.012 kg of carbon 12.

newton click to hear

Force required to impart an acceleration of 1 m/s2 to a body having a mass of 1 kg.

kelvin click to hear

Zero Kelvin is equal to minus 273.16°C.

kilogram click to hear

Mass of a platinum prototype that was accepted as the international reference in 1889; it is stored at the International Bureau of Weights and Measures.

meter click to hear

Distance traveled by light in a vacuum in 1/299,792,458 of a second.

measurement of electric resistance click to hear

measurement of electric potential difference click to hear

measurement of luminous intensity click to hear

measurement of power click to hear

measurement of energy click to hear

measurement of electric current click to hear

measurement of electric charge click to hear

measurement of frequency click to hear

measurement of radioactivity click to hear

measurement of Celsius temperature click to hear

measurement of pressure click to hear

measurement of force click to hear

measurement of amount of substance click to hear

measurement of thermodynamic temperature click to hear

measurement of mass click to hear

measurement of length click to hear