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COI synopsis: Similar in principle to the cartridge of a record player this device assesses a metal’s hardness by forcing a diamond to indent the surface and measuring the voltage generated.
COI synopsis: Cats’ eyes have for long burned bright to illuminate the roads at night. A development of the "cats’ eye" principle, ‘Unistuds’ provide a larger amount of reflection, are self-cleaning,...
COI synopsis: Cholesterol has for some time been known as the substance which furs up the lining of arteries, leading to coronary thrombosis. But only recently has it been shown that cholesterol is released...
COI synopsis: Gramophone records can provide a whole symphony orchestra playing the ‘1812’ on a 12-inch plastic disc thanks to stereophonic sound and microgrooves. Now, book publishers, with the...
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