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Indirect Measurement

Learn about Earnest Rutherford's 1911 Gold Foil Experiment and how indirect measurements helped in predictions using alpha particles, revealing the nucleus's dense positive charge. Explore fascinating videos about this experiment and the concept of powers of 10.

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Indirect Measurement

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  1. Indirect Measurement Predictions Ch. 1, Act. 6

  2. Earnest Rutherford (1911)“The Gold Foil Experiment” • Bombarded gold foil with  particles from the radioactive decay of uranium238. • Most of the particles traveled through very thin gold foil without being deflected. • Occasionally, particles would deflect, sometimes at angles > 90o. • Results show that the dense positive charge is centrally located in the nucleus.

  3. wps.prenhall.com The Gold Foil Experiment • Rutherford's Gold Foil Experiment Note: The diameter of the atom was determined to be on the order of 100,000x larger than the nucleus!

  4. VideosRutherford:https://www.youtube.com/watch?v=NlDPPANJZXMPowers of 10: https://search.yahoo.com/yhs/search?p=powers+of+10+video&ei=UTF-8&hspart=mozilla&hsimp=yhs-001Alt Rutherford:http://www.youtube.com/watch?v=FfY4R5mkMY8&feature=related

  5. Indirect Measurement • The probability of landing in a certain area can be expressed as follows: Area of Interest total area P = x 100%

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