Assertion: prototype kilogram | /r/HasProperty | ipk
Facets:
Source sentences:
text: Following a historic vote on Friday at the General Conference on Weights and Measures, in Versailles, the kilogram will no longer be defined by the international prototype kilogram (IPK), a platinum alloy cylinder fashioned in 1889, but by Planck’s constant, a number that is deeply rooted in the quantum world.
text: The last artefact used by the SI was the International Prototype Kilogram (IPK), a particular cylinder of platinum-iridium; from 1889 to 2019, the kilogram was by definition equal to the mass of the IPK.
text: The last artefact used by the SI was the International Prototype Kilogram (IPK), a particular cylinder of platinum-iridium; from 1889 to 2019, the kilogram was by definition equal to the mass of the IPK.
text: To solve the problem, scientists created a cylindrical hunk of mass called the international prototype kilogram (IPK) from platinum and platinum-iridium alloy.
text: Defined as being equal to the mass of the International Prototype Kilogram (IPK), that is almost exactly equal to the mass of one liter of water.
text: Defined as being equal to the mass of the International Prototype Kilogram (IPK), that is almost exactly equal to the mass of one liter of water.
text: To solve the problem, scientists created a cylindrical hunk of mass called the international prototype kilogram (IPK) from platinum and platinum-iridium alloy.