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00:45:00

Radiometers as buttonholes: the extraordinary material legacy of William Crookes

by Jane Weiss
Radiometers as buttonholes: the extraordinary material legacy of William Crookes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 7 years ago | 1344 views
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William Crookes was a physicist, chemist, entrepreneur and spiritualist.  Being a consummate experimenter he designed precision instruments of great delicacy, in particular exquisite glass vacuum tubes. The radiometer, when first exhibited in 1875, ....

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00:46:00

Paul Dirac and the religion of mathematical beauty

by Graham Farmelo
Paul Dirac and the religion of mathematical beauty
for 18-22 and upwards,
Lectures | 18-22 and upwards | 7 years ago | 1026 views
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For the great theoretical physicist Paul Dirac FRS, the importance of mathematical beauty was 'like a religion'. Although his first papers on quantum mechanics showed an acute aesthetic awareness, he first set out his principle of mathematical beauty....

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