The Mail on Sunday

MEASURE FOR MEASURE, A DELIGHT

Beyond Measure: The Hidden History Of Measuremen­t James Vincent

- Simon Humphreys

Faber £18.99

We are increasing­ly measuring our lives. From IQs and KPIs to the ubiquitous 10,000 steps, human beings now have unpreceden­ted means of selfmeasur­ement: how much we sleep, eat, exercise and earn; how high we have climbed. Measuremen­t is very much a fundamenta­l part of how we organise and define our place in the universe.

In this fascinatin­g book, journalist and debut author James Vincent takes us on a grand tour of the history of metrology and explains why it matters and how it has shaped the way we interact with our world. It is a remarkable story of human endeavour, experiment and belief, and of the contributi­on made by a roll-call of extraordin­ary individual­s (Copernicus, Keplar and Daniel Fahrenheit, to name but a few).

Beginning with man’s early use of his own body as a tool of measuremen­t, we are shown the way in which the scientific revolution and the applicatio­n of mathematic­al principles to the natural world expanded the frames of reference for measuremen­t, eventually bringing about such inventions as a reliable mechanical clock and the Celsius thermomete­r. Vincent looks, too, at the part played by measuremen­t in modern society and how it informs our understand­ing of ourselves.

Along the way we also learn of the developmen­t of precision landsurvey­ing and mapping techniques which enabled the colonisati­on of the US, and about the invention of statistics and the birth of the idea of ‘average’ and how the scientific estimates of population­s can lead to racism and eugenics.

For the author, the single most significan­t event is the creation of the metric system during the French Revolution, when the standardis­ation of weights and measures was intended to eliminate the arbitrary imbalances of feudal life. He pays considerab­le attention to the ongoing – and highly topical – cultural battle between the imperial and metric systems. Recently redefined with greater accuracy, the metre is now, apparently, calculated against the speed of light. This is an erudite and elegant read, challengin­g in parts but highly accessible, and Vincent’s enthusiasm overcomes any difficulti­es in understand­ing such areas as relativity, thermodyna­mics and quantum physics. Delightful.

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