Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 112
imple wheel, to be operatedby gases. The wheel consists of a disk of light but stiff cardboard, mounted between two corks on a straight knittingneedle, and provided around its periphery with bucketsformed of squares of writing paper, attached to the per-iphery of the disk by two adjoining edges so… … Rubber Forced Inward byAir Pressure.
Physics · Lantern projection · Electric apparatus and appliances
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![An illustration from [Catalog] (1914)](https://img.insideoutlibrary.com/img/200/ia-catalog00aava-20-75.webp)
