Precision

2016
1:00:00

August 12, 2015

Expired 3.0 19 x
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 ...
1:00:00

August 4, 2015

Expired 3.0 4 x
Professor Marcus du Sautoy tells the story of the metre and the second - how an astonishing journey across revolutionary France gave birth to the metre, and how scientists today are continuing to redefine the measurement of time and length, with extraordinary results.
Episodes 2015
1:00:00

August 19, 2015

Expired 3.0 12 x
From lightning bolts and watt engines to electromagnetic waves and single electrons, Professor Marcus du Sautoy continues his journey into the world of measurement as he reveals how we came to measure and harness the power of heat, light and electricity. It's a journey that has involved the greatest minds in science and, t...
Episodes 2013

3. Heat, Light and Electricity

3.0 33 x
How we came to measure and harness the power of heat, light and electricity.

2. Mass and Moles

3.0 38 x
Exploring the history of the world's master kilogramme and the race to replace it.

1. Time and Distance

3.0 9 x
Professor Marcus du Sautoy explores measurement by looking at the metre and the second.
Archive
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