Inside Out Library · Explore

Scientific American, Vol. 66, No. 13 (1892) (1892)

leaf 8

An illustration from Scientific American, Vol. 66, No. 13 (1892), 1892, leaf 8
is perforated sion to this trouble were the current turned on. tions of a reed, tuning fork or diaphragm. It is not The general operations of the office are facilitated with a 4 inch round hole. assumed that it can replace any of the existing by the use of the cash carrier railroad and by pneu- In… … is contemplated on election nights and similar occa- very low pitch. ‘If the vibrations are too frequent in sions to thus use it. jany of the forms of this experiment, the rings merge VIBRATIONS SHOWN’ BY SMOKE RINGS, The average business done in this office is over into each other and the effect…

Internet Archive · Public domain (published before 1931). Free to use for anything.

More pictures from Scientific American, Vol. 66, No. 13 (1892)

More like this