Six kinds of electric light produced in tubes containing different gases. Colour aquatint (?) by M. Rapine, 1868.

    • Rapine, Maximilien, 1840-1905.
    Date:
    1868
    Reference:
    578794i

    Licence: Public Domain Mark

    Credit: Six kinds of electric light produced in tubes containing different gases. Colour aquatint (?) by M. Rapine, 1868. Wellcome Collection. Source: Wellcome Collection.

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