[28]
[Footnote 28: M. Sagnac (_Le Radium_, Jan. 1906, p. 14), following
perhaps Professors Elster and Geitel, has lately taken up this idea
anew.--ED.]
M. Cremieux has recently undertaken experiments directed, as he
thinks, to showing that the divergences between the phenomena of
gravitation and all the other phenomena in nature are more apparent
than real. Thus the evolution in the heart of the ether of a quantity
of gravific energy would not be entirely isolated, and as in the case
of all evolutions of all energy of whatever kind, it should provoke a
partial transformation into energy of a different form. Thus again the
liberated energy of gravitation would vary when passing from one
material to another, as from gases into liquids, or from one liquid to
a different one.
On this last point the researches of M. Cremieux have given
affirmative results: if we immerse in a large mass of some liquid
several drops of another not miscible with the first, but of identical
density, we form a mass representing no doubt a discontinuity in the
ether, and we may ask ourselves whether, in conformity with what
happens in all other phenomena of nature, this discontinuity has not a
tendency to disappear.
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