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I The "New Look"
BY HAVING YOUR DRY CLEAN
ING AND DYEING DONE BY
Tel. J6171 *~
JOHN WlPER—Tomato Sauce.
Home-made flavor—delicious
tAdvU
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(AdvtJ
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i ?
K^^^^CL JL^sHPSBb?/ turned /to scientific ?*?
&n[Z*^^£^^m£a&!^~&^^t I search after a commercial
India Company. and
- made the historic dis
covery that water could be decomposed by passing an electric
current through it This is an example of electrolysis which
is the foundation of many important industrial and scientific
operations. \Vorking in company with another English
chemist Carlisle, in 1800. Nicholson constructed an electric
battery (known at that time as a "Voltaic Pile"), from
thirty-six half-crowns, and a number of zinc discs and pieces
of pasteboard. Though the current produced by this crude
apparatus was so minute that only a few thimblefuls of gas
were collected over a period of thirteen hours, Nicholson
showed not only that water could be electrolysed, but that
the two gases of which it is composed appear at different
places, the oxygen being evolved where the electric current
enters the water and hydrogen where it leaves.
Nicholson, who was ?born in London in 1753. made many
other scientific discoveries between bis return from India in
1786 and his death in 1815. He invented a hydrometer, took
out patents for textile printing machinery, planned and carried
out a scheme for the water 'supply to Portsmouth. He was
a scientific writer of great contemporary eminence and
founded, and. until his death, -edited the "Journal of Natural
Philosophy." But the electrolysis of water.
a fundamental discovery of very great |f*l^m
importance, remains this Englishman's real
contribution to the world's total of scientific
knowledge.
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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?habit as your smoking? Tests have
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