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IN 1872 Mr. Schuster published the important statement that “nitrogen, heated in a Geissler tube with metallic sodium, ceased to give the characteristic channelled spectrum.” He described the ...

THE SPECTRUM OF HYDROGEN IN NEBULÆ.—If hydrogen gas in a Geissler tube be examined spectroscopically, the brightest line observed is Hα. If, on the other hand, the lines of hydrogen in nebulæ ...

THE writer has examined the four-line spectrum of hydrogen as produced in Geissler tubes with a 1 mm. capillary by alternating current of 15 milliamperes without inductance or capacity.

with the object of investigating the relative temperatures at different parts of the discharge in a Geissler tube, with special reference to the stratification phenomena. Wiedemann and Hittorf ...

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THE Geissler tubes and Crookes tubes that were in almost every physical laboratory at the end of the last century enabled any student to observe with ease the fascinating phenomena of electric ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

IN the month of July, 1879, I published in the Reports of the Royal Berlin Academy of Sciences, some photographs of the spectra of Geissler tubes, filled with rarefied hydrogen. In these ...

AT the suggestion of Prof. Lodge, I undertook to repeat in the Physical Laboratory of the University College, Liverpool, Hertz's celebrated experiments on electrical oscillations.