Following the signing of the Convention of the Metre on 20 May 1875, new international prototypes for the metre and the kilogram were established in 1889. These units, together with the astronomical ...
In addition to Ampere, Kelvin, Mol and Co., the kilogram also is now defined by a natural constant. In concrete terms, this means that the original kilogram, which has been the measure of all things ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback