Tyndall, John, 1820-1893 · New York, D. Appleton · leaf 422
a currentfrom a Groves battery of five cells. Means were devisedto render this lamp perfectly constant throughout the day.In front of the spiral, and with an interior reflecting sur-face, is the tube B, through which thereat passes to therock-salt cell c. This cell is placed on a little stage, 1 I… … 398 HEAT A MODE OF MOTION. lect. xrv. soldered to the back of the perforated screen s s, so thatthe heat, after having crossed the cell, passes through thehole in the screen, and afterwards impinges on the ther-mo-pile p. c is the compensating cube, containing waterkept boiling by steam passing…
Heat
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