Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 212
spider is retained on its pivot bya small tube extending downward fromthe top of the globe. When placed insunlight or near a gas or lamp flame, thevanes revolve rapidly. An alum cell interposed between theradiometer and the source of light andheat allows the light to pass, but inter-cepts the heat… … Radiometer TYNDALL S EXPERIMENT ON RADIANT HEAT. It often happens that students who desire to test forthemselves the experiments of distinguished investigatorsare prevented from such instructive pleasures by the notionthat, for delicate experiments, fine and expensive apparatusis required. Such…
Physics · Lantern projection · Electric apparatus and appliances
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