. The Philosophical magazine; a journal of theoretical, experimental and applied physics . E P, Fig: Bros lith. j: O cos 6df=z \ - fodt ss - 7rm\ Effect upon the Ocean-tides of o Liquid Suhstrcdum. 213and =r- Jo a n Therefore m, m are proportional to the required integrals. Each slider niioht carry a train of wheels to record thenumber of rotations; or an electrical arrangement might bemade in which each wheel should complete a circuit at eachrotation and the number of contacts should be recorded. Inthe latter case, as no distinction is preserved as to the direc-tion in which the
. The Philosophical magazine; a journal of theoretical, experimental and applied physics . E P, Fig: Bros lith. j: O cos 6df=z \ - fodt ss - 7rm\ Effect upon the Ocean-tides of o Liquid Suhstrcdum. 213and =r- Jo a n Therefore m, m are proportional to the required integrals. Each slider niioht carry a train of wheels to record thenumber of rotations; or an electrical arrangement might bemade in which each wheel should complete a circuit at eachrotation and the number of contacts should be recorded. Inthe latter case, as no distinction is preserved as to the direc-tion in which the wheels revolve, it becomes necessary to havefour circuits, oue for each cardinal point, with a recorder ineach, and to have one connected with each arm of the cross. A working model of the instrument above described wasexhibited at the Meeting, and was fitted with an electricalarrangement such as I have mentioned. I have since discovered that the slits, sliders, and bar abovedescribed may be replaced by a train of cogged wheels. (Fig. 4represents the upper, and fig. 5 the under surface of the train.
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