...of such stretched strings, forming thns the analogue of a "medium." It is evident that such a medinm on being agitated would give out the note above mentioned...creation of vis viva. The optical application of this illnstration is too obvions to need comment. PROGRESS OF PHYSIOLOGY. LORD WROTTESLEY, as President...

...AND SOUND. Prof. Stokes, in a note to a paper in the Philosophical Magazine, No. 126, observes: — The remarkable phenomenon discovered by Foucault,...this illustration is too obvious to need comment. DANIELL S GREAT WATER BAEOMETER. A water barometer which had been constructed thirty years ago byProf....

...observes: — The remarkable phenomenon discovered by Foucault, and rediscovered and extended by Kirehhoff, that a body may be at the same time a source of light,...this illustration is too obvious to need comment. A water barometer which had been constructed thirty years ago by Prof. Daniell, in London, was lately...

...discovered by Foucault, and rediscovered and extended by Kirchhoff", that a body may be at the same timo a source of light, giving out rays of a definite refrangibility,...this illustration is too obvious to need comment. DANIELL S GEEAT WATEB BAEOMETEE. A water barometer which had been constructed thirty years ago by Prof....

...note (suppose ts fundamental note) is capable of being thrown into the same state of vibra- . t\on by aerial vibrations corresponding to the same note....themselves be gradually extinguished, since otherwise títere would be a creation of in« viva. The optical application of this illustration is too obvious...

...note. Suppose now a portion of space to contain a great number of such stretched strings, forming thue the analogue of a ' medium.' It is evident that such...extinguished, since otherwise there would be a creation of vu viva. The optical application of this illustration is too obvious to need comment" Professor Tyndall...

...being agitated, would give out the note above mentioned ; while, on the other hand, if that note wore sounded in air at a distance, the incident vibrations...this illustration is too obvious to need comment. DANIELL S GREAT WATER BAROMETER. A water barometer which had been constructed thirty years ago by Prof....

...out a certain note (suppose its fundamental note), is capable of being thrown into the same states of vibration by aerial vibrations corresponding to...this illustration is too obvious to need comment." Such was the theory which as I have shown was taught by Stokes prior to 1852, and by Thomson in his...

...medium, on being agitated, would give out the note above mentioned, while, on the other hand, if the note were sounded in air at a distance the incident...since otherwise there would be a creation of vis viva, that is, of kinetic energy.' We may perhaps carry the illustration a little further. If instead of...

...illustration borrowed from sound. We know that a stretched string which on being struck gives out a certain note, is capable of being thrown into the same state...in air at a distance, the incident vibrations would 1 'PhiL Mag.,' March 1860, pp. 194, 196. throw the strings into vibration, and consequently would themselves...