science chapter 04 class 9th cbse
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J. J. Thomson
Sir Joseph John Thomson (1856-1940)
Born18 December 1856Cheetham Hill, Manchester, UK
Died30 August 1940 (aged 83)Cambridge, UK
Nationality United KingdomFields PhysicsInstitutions Cambridge University
Alma materUniversity of ManchesterUniversity of Cambridge
Academic advisorsJohn Strutt (Rayleigh)Edward John Routh
Known for
Plum pudding modelDiscovery of electronDiscovery of isotopesMass spectrometer inventionFirst m/e measurementProposed first waveguideThomson scatteringThomson problemCoining term 'delta ray'Coining term 'epsilon radiation'Thomson (unit)
Notable awards Nobel Prize for Physics (1906)
THOMSON’S MODEL OF THE ATOM
Born
6 September 1766(1766-09-06)Eaglesfield, Cumberland, England
Died27 July 1844 (aged 77)Manchester, England
Notable students James Prescott Joule
Known for
Atomic Theory, Law of Multiple Proportions, Dalton's Law of Partial Pressures, DaltonismInfluences John Gough
THE STRUCTURE OF ATOM
Born30 August 1871(1871-08-30)New Zealand
Died 19 October 1937 (aged 66)
Citizenship United Kingdom
Nationality British-New Zealander
Other notable students
Mark OliphantPatrick BlackettHans GeigerNiels BohrOtto Hahn
Known for
Father of nuclear physicsRutherford modelRutherford scatteringRutherford backscattering Discovery of protonRutherford (unit)
Notable awards
Rumford Medal (1905)Nobel Prize in Chemistry (1908)Matteucci Medal (1913)Copley Medal (1922
Rutherford’s model of the atomRutherford’s model of the atom
Born
20 October 1891(1891-10-20)Bollington, Cheshire, England
Died24 July 1974 (aged 82)Cambridge, England
Citizenship United KingdomFields Physics
Institutions
Technical University of Berlin
Liverpool UniversityGonville and Caius College
Cambridge UniversityManhattan Project
Known for Discovery of the neutron
Notable awardsNobel Prize in Physics (1935)
Born
Niels Henrik David Bohr7 October 1885(1885-10-07)
Died
18 November 1962 (aged 77)
Nationality Denmark
Fields Physics
InstitutionsUniversity of Copenhagen
University of Manchester
Alma materUniversity of Cambridge
University of CopenhagenDoctoral advisor Christian Christiansen
Other academic advisors
J. J. ThomsonErnest Rutherford
Doctoral students Hendrik Anthony Kramers
The atomic number is defined as the total number of protons presents in an atom
Distribution of other 10 Atomic ElementsDistribution of other 10 Atomic Elements