1 / 7

J.J. Thomson

J.J. Thomson. By: Chase Kelsey Justin & Cody. Joseph John Thomson. Born: December 18, 1856 Died: August 30, 1940 Recognized as the British scientist who discovered and identified the electron Professor of physics at Trinity College Won the 1906 Nobel Prize for Physics.

devaki
Download Presentation

J.J. Thomson

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. J.J. Thomson By: Chase Kelsey Justin & Cody

  2. Joseph John Thomson • Born: December 18, 1856 • Died: August 30, 1940 • Recognized as the British scientist who discovered and identified the electron • Professor of physics at Trinity College • Won the 1906 Nobel Prize for Physics http://upload.wikimedia.org/wikipedia/commons/b/b6/Jj-thomson2.jpg

  3. Theory • Announced his theory on April 30, 1987 • Announced that Cathode Rays were negatively charged particles called Corpuscles (things from which atoms were build up) • Have a mass of about 1000 times smaller than a hydrogen atom • Theory not accepted until 1899

  4. Cathode Ray Tube • Thomson founded the electron with the cathode ray tube • He found that the (-_electrons were inside (+) charges (After Eugene Goldstein found atoms had a positive charge)

  5. Theory • Thomson discovered the electron, the first subatomic particle • His work suggested that the Atom was not an “indivisible” particle like john Dalton had suggested

  6. Theory • J.J. Thomson is also remembered for his "plum-pudding" model of the atom, which suggested a solid atom with positively and negatively charged particles evenly distributed throughout the mass of the atom.

  7. Works Cited • "Atomic Magic: J. J. Thomson". Grolier Multimedia, Inc.. 11/21/08 http://library.thinkquest.org/15567/bio/thomson.html. • Carpi, Anthony . "Atomic Theory I". Vision learning, Inc.. 11/21/08 http://www.visionlearning.com/library/module_viewer.php?mid=50. • "Joseph John Thomson". Chemical Heritage Foundation. 11/21/08 http://www.chemheritage.org/classroom/chemach/atomic/thomson.html. • Park, John. "The Thomson Model of the Atom". 11/21/08 http://dbhs.wvusd.k12.ca.us/webdocs/AtomicStructure/Thomson-Model-Intro.html.

More Related