Inside Out Library

Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 404

An illustration from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families, 1878, leaf 404
lutions of fine wire are employed. 763. The directive action of the earth.—In all experimentsthe needle is more or less governed by the magnetic force of the earth,which must be neutralized in the experimental needle in order to ac-curately estimate the force of electrical currents ; for, before…

Physics · Astronomy

Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.

More pictures from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families

More like this