As of this Monday, there is a new global definition of the kilogram. For most of us, this won’t affect our daily lives but in some fields it makes a big difference for the better.
The General Conference of Weights and Measures meets every four to six years. This time, they modified the global definition of the kilogram as well as the ampere, kelvin and mol.
The definition of the kilo had been based on a metallic cylinder called “Le Grand K.” Scientists found that the mass of this prototype had varied slightly compared to copies made in the 19th century. This posed a problem for scientists and quantum technology. The kilogram will now be derived from Planck’s constant, a fundamental constant of quantum physics.
Based on the changes, pharmacists will be able to define the micrograms of a drug more accurately and precise measurements of temperature will also be facilitated. High-tech manufactures must adapt their products to the new measurements.