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In their experiments, Pons and Fleischmann pass an electrical current between palladium and platinum electrodes immersed in a flask containing lithium ions dissolved in deuterium oxide -- a heavy version of water made of oxygen and the hydrogen isotope deuterium. Deuterium oxide is thus two atomic mass units heavier than hydrogen oxide. Moreover, where deuterium oxide dilution requires drawing blood and underwater weighing requires immersion in a calibrated pool, the infrared technique can be completed in three minutes and may ultimately require no more than the rolling up of one's sleeve. |
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