Exactly a Yard - Objectivity 19
Автор: Objectivity
Загружено: 2015-05-12
Просмотров: 133786
Brady and Keith look at some of The Royal Society's collection of standard weights and measures - including a particularly special one that even Keith had never unpacked before!
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Royal Society: http://bit.ly/Royal_Society
Films by James Hennessy and Brady Haran
Some keywords: standard weights, measures, bar, cylinder, canister, troy pound, precious metals, platinum, special fork, Newcastle University, mercury, cleaning, standard pound, glass, medieval, Palace Westminster, castle burning, mass destruction, weights destroyed, long wooden box, lid with screws, first time opening, standard yard, Isaac Newton, John Herschel, master of mint, copper, tin, zinc, Francis Baily, Troughton and Simms, instrument maker
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