Energy units – muddle in the making?

It was decided early in the 1990s that the unit for pricing of domestic gas should change from the therm to the kilowatt hour, which is a metric unit but not SI. We ask if this made ‘metric sense’.
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The flip side of SI

Charlie P, a regular if occasionally critical contributor to MV, promised he would on his return from holiday give his thoughts on “the flip side of the SI as far as the average man in the street is concerned”. These now appear below. They are of course not endorsed by the Editors of MV, but may provide food for thought.

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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.

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