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Precision: The Measure of All Things

Marcus du Sautoy

Mike Cunliffe

Mark Woodward

Precision: The Measure of All Things: Episode 2: Mass and Moles

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Factual: Science & Nature

Mass and Moles

Episode 2

Episode 2: Mass and Moles

BBC Four - Precision: The Measure of All Things, Mass and Moles

Exploring the history of the world's master kilogramme and the race to replace it.

Marcus du Sautoy explores the history of Le Grand K - the world's master kilogramme - and the race to replace it now that it has been discovered to be losing weight.

Deep underground in a vault beneath Paris lives the most important lump of metal in the world - Le Grand K. Created in the 19th century, it's the world's master kilogramme, the weight on which every other weight is based. But there is a problem with Le Grand K - it is losing weight. Professor Marcus du Sautoy explores the history of this strange object and the astonishing modern day race to replace it.

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Series exploring why we are driven to measure and quantify the world around us.

Professor Marcus du Sautoy explores why we are driven to measure and quantify the world around us and why we have reduced the universe to just a handful of fundamental units of measurement.

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Precision: The Measure of All Things

Episode 2: Mass and Moles

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