Keywords

#international_prototype_of_the_kilogram

International Prototype of the Kilogram

Physical artifact that formerly defined the kilogram

The International Prototype of the Kilogram is an object whose mass was used to define the kilogram from 1889, when it replaced the Kilogramme des Archives, until 2019, when it was replaced by a new definition of the kilogram based entirely on physical constants. During that time, the IPK and its duplicates were used to calibrate all other kilogram mass standards on Earth.

Tue 10th

Provided by Wikipedia

Learn More

This keyword could refer to multiple things. Here are some suggestions:

International Prototype of the Kilogram Kilogram 2019 revision of the SI Kibble balance Standard (metrology) Platinum–iridium alloy Prototype-based programming Alternative approaches to redefining the kilogram Metrology International System of Units
0 searches
This keyword has never been searched before
This keyword has never been searched for with any other keyword.