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method measuring tiny gold ore balls in arab

Millikan oildrop experiment first direct and compelling measurement of the electric charge of a single was performed originally in 1909 by the American physicist Robert A Millikan who devised a straightforward method of measuring the minute electric charge that is present on many of the droplets in an oil mist The force on any electric charge in an electric field is equal to ...As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

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