ENTS WITH THE SCIENTIFIC TOP. rotating with the top. In this case each perforation will appear to turn in one direction while another BY GEO. M. HOPKINS. of the disk forms a circle, and the circles formed by part turns in the opposite direction. Some of these A scientific top and a few experiments… … chord. A large number of experiments with plication of more or less friction to the disk, a THE CHAMELEON TOP. great variety of intricate and beautiful figures this simple siren are described in Prof. A. M. Mayer's interesting little book on sound. Sav- are produced. Examples are shown in Figs. 9,…
Patents · Munn · Disk · Air · Illustrated · Patented · Scientific American · Splice rails · Sole manufacturers · Pressure cylinder · Ten dolar · Address munn · Steam engine · Express money · Test tube · Small fiask
Internet Archive · Public domain (published before 1931). Free to use for anything.
