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<big>'''Rays of Positive Electricity and Their Application to Chemical Analyses, Joseph John Thomson, 1913''' 
:[http://www.archive.org/details/1913raysofpositi00thomuoft Internet Archive Online]
:[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses Wikisource]
</big>

== Preface ==

I have endeavoured in this book to give some account of the experiments on Positive Rays which have been made at the Cavendish Laboratory during the last seven years, and which have been the subject of papers scattered through the Philosophical Magazine, the Proceedings of the Royal Society, and the Proceedings of the Cambridge Philosophical Society. I have, in addition, included a short account of the researches of Stark and others on the Doppler effect in Positive Rays and of Gehrcke and Reichenheim's experiments on Anode Rays, as these, those on the Doppler effect especially, are very closely connected with the results obtained by the very different methods described in the earlier part of this book. I have described at some length the application of Positive Rays to chemical .analysis ; one of the main reasons for writing this book was the hope that it might induce others, and especially chemists, to try this method of analysis. I feel sure that there are many problems in Chemistry which could be solved with far greater ease by this than by any other method. The method is surprisingly sensitive — more so even than that of Spectrum Analysis, requires ,an infinitesimal amount of material, and does not require this to be specially purified: the technique is not difficult if appliances for high vacua are available. I am glad to be able to take this opportunity of expressing my obligations to Mr. F. W. Aston, B.A., and Mr.  E. Evrett. My  thanks also  are  due to  the President and Council of the Royal Society for permission to  use the blocks Illustrating  my   Bakerian Lecture.

:::: '''[[Wikipedia:J.J. Thomson|J. J. Thomson]]'''
::''Cambridge, 4 October, 1913.''
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[[File:Jj-thomson2.jpg|500 px|center]]

==Contents==

*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Rays_of_Positive_Electricity Rays_of_Positive_Electricity]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Double_Cathodes Double_Cathodes]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Rectilinear_Propagation_of_the_Positive_Rays Rectilinear_Propagation_of_the_Positive_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Electrostatic_Deflection_of_the_Particle Electrostatic_Deflection_of_the_Particle]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Wien's_Proof_of_the_Magnetic_and_Electric_Deflection_of_the_Rays Wien's_Proof_of_the_Magnetic_and_Electric_Deflection_of_the_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Effect_at_Very_Low_Pressures Effect_at_Very_Low_Pressures]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Discussion_of_the_Photographs Discussion_of_the_Photographs]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Negatively_Charged_Particles Negatively_Charged_Particles]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Atoms_Carrying_Two_or_More_Positive_Charges Atoms_Carrying_Two_or_More_Positive_Charges_]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Methods_for_Measuring_the_Number_of_the_Positively_Electric_Fied_Particles Methods_for_Measuring_the_Number_of_the_Positively_Electric_Fied_Particles]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Retrograde_and_Anode_Rays Retrograde_and_Anode_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Anode_Rays Anode_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Doppler_Effect_Shown_by_the_Positive_Rays Doppler_Effect_Shown_by_the_Positive_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Spectra_Produced_by_Bombardment_with_Positive_Rays Spectra_Produced_by_Bombardment_with_Positive_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Disintegration_of_Metals_Under_the_Action_of_Positive_Rays Disintegration_of_Metals_Under_the_Action_of_Positive_Rays]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/On_The_Use_of_the_Positive_Rays_for_Chemical_Analysis On_The_Use_of_the_Positive_Rays_for_Chemical_Analysis]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/On_the_Nature_of_X3_the_Substance_Giving_the_3_Line On_the_Nature_of_X3_the_Substance_Giving_the_3_Line]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Evolution_of_Helium_and_Neon Evolution_of_Helium_and_Neon]
*[https://en.wikisource.org/wiki/Rays_of_Positive_Electricity_and_Their_Application_to_Chemical_Analyses/Index Index]