Counting Down to the New Ampere (2016)

Does anyone know why these apparatuses are usually "inverted", i.e. hang from the ceiling. I've seen the same thing for quantum computers. Is it related to the way they are cooled? Or is it easier to work with somehow?

More exciting is that the mol and Avogadro's constant will be pushed off to the side on their own. Hopefully an even more future update will remove them entirely. They're really quite redundant and pretty much only exist to facilitate the needless presence of the non-SI mass unit, the unified atomic mass unit, which thankfully will now be defined in terms of the kg instead of having two independent mass units like we have now.

Why is an ampere a fundamental unit but,not a coulomb?

A mostly unrelated question, in case any metrology geeks are around: why is the Kelvin an SI unit?<p>Naively, there seem to be multiple approaches to derive temperature from other, more fundamental units. Like using the thermodynamic definition, 1&#x2F;T = dS&#x2F;dE, or using Boltzmann&#x27;s law to approach temperature from the mean kinetic energy of gas particles. Are none of them suitable for precise measurement?

Why is the kilogram the base unit instead of gram?

So does this mean that quantum computing will become more viable? Since in quantum computing, calculations are accomplished by measuring the spin of an electron, I would imagine this would increase the throughput to a measurement instrument since this is allowing one electron to pass at a faster pace. While electron measurement instruments still need to be advanced significantly, I would imagine an innovation like this would further advance the reality of true quantum computing. Is this an accurate assessment?