Physics

1 / 273.16 of thermodynamic temperature at triple point of water

9.2 Billion vibrations of transition between two level of cesium-133 atom in ground state

Mass of platinum iridium cylinder kept in International Bureau of weights in paris, France

1.65Million wavelength of orange red coloured radation emitted by krypton 86

Relative error expressed in percentage

Ratio of error observed in the measurement to the actual value

Difference in actual value and the measured value

Errors arising out of unknown causes with varying value in each measurement

Errors arising out of known causes

Multiple measurements show the same constant error

Constant Error Explanation

Weighing machine showing 1 kg in the scale when no object is placed on it.