During the BBC programme “Bells on Sunday”, one of our readers noted that an unfamiliar unit was used to denote the weight of a bell.Continue reading “Bats in the belfry”
Experts weigh in
Following our article on the new definition of the kilogram, Martin Vlietstra, one of our occasional contributors, provides some insight into how, in the 21st century, this standard is passed down to us, the general public.
The kilogram weight
The redefinition of the kilogram takes effect in two weeks time. To mark the event, Martin Vlietstra, one of our frequent contributors, looks at the “old” and “new” versions of this international standard.
Planned upgrades to the SI
We kick off 2017 with an article for metric geeks.
New breakthrough for the kilogram
In this article about new scientific developments to redefine the kilogram and remove its link to a physical object, Ronnie Cohen writes about recent reports about a new scientific breakthrough in getting the most accurate estimate of Avogadro’s constant to date, which can help to redefine the kilogram. These reports have been published in the last few weeks and you can find a list of sources at the bottom of this article.