Labour’s persistent failure to address its electorate’s salient concerns is behind the protest vote, asserts DIANE ABBOTT
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Defining the kilogram: a massive question
The International Prototpe of a Kilogram is getting old and fat, 130 years and 50 micrograms overweight to be precise. But how to replace it? SCIENCE AND SOCIETY explain
Washington’s lawless behaviour towards countries in the region it considers its ‘back yard’ should be condemned by all law-abiding people, says LUKE DANIELS
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HOW much is one kilogram? The answer, it turns out, is “about one kilogram…but not quite.” In just a few months, the definition of 1kg will be fundamentally changed, thanks to an international conference of scientists in Paris last November.
The International Prototype of a Kilogram
Defining 1kg might seem like an abstract philosophical question, but it’s also a practical one. When Marx wrote Das Kapital, he explained “A sugar-loaf being a body, is heavy, and therefore has weight: but we can neither see nor touch this weight” (Chapter 1). To weigh anything requires a system of standards for measurement.
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