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  1. Zeeman's discovery and the mass of the electron.Nadia Robotti & Francesca Pastorino - 1998 - Annals of Science 55 (2):161-183.
    In an article published recently in this journal, one of us reconstructed how in 1899 J. J. Thomson, after having measured the mass-to-charge ratio of the corpuscle , achieved a measurement of its charge and consequently an estimate of its mass, obtaining in this manner ‘direct proof of the existence of particles smaller than the hydrogen atom’. In this paper, starting with an analysis of Zeeman's first measurements on the widening of spectral lines in a magnetic field, we show that (...)
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  • Explaining Atomic Spectra within Classical Physics: 1897-1913.Bruno Carazza & Nadia Robotti - 2002 - Annals of Science 59 (3):299-320.
    In this paper we analyse the approach to interpreting atomic spectra in the framework of classical physics from the discovery of the electron in 1897 to Bohr's atomic model of 1913. Taken as a whole, efforts in this direction are part of a remarkable intellectual endeavour in which the classical theoretical framework seems to have been exploited to its full potential. By demonstrating the limits and weaknesses of classical physics in solving the problem of spectral emissions, these attempts opened the (...)
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