Tissandier, Gaston, 1843-1899, Frith, Henry, 1840-, Harry Houdini Collection (Library of Congress) DLC · London, New York [etc.] Ward, Lock & Co · leaf 60
needle, the latter is supportedby it, so that scarcely any part of the needle is touchingthe water ; of course, if the water penetrated the needleseye, the weight of the fluid would cause the thing to sinkimmediately. Another method is to put a leaf of cigaretteor tissue paper on the surface of a… … Fig- 33—Direction of Candle-flames under the influence of Air-( The MOVEMENTS of Gases. AERIAL CURRENTS. Hot air is much lighter than cold air, and the differ-ences in density of the air-strata play a very importantpart in the movements of the atmosphere. Air is warmedin the Equatorial, and cooled…
Scientific recreations
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