Inductive elementary physical science with inexpensive apparatus, and without laboratory equipment (1897)
Bailey, Frederick H. (Frederick Harold), 1865- · Boston, D. C. Heath & Co. · leaf 58
1 require a high point of suspension.Where it is not convenient to arrange a hook directly above eaeli pupilsdesk or table, a few hooks and strings should be provided where pupilscan go in turn or in very small groups, to experiment. Usually hooksmay be inserted into the top of window-casings, and… … Exp. 20. Exp. 20. Suspend the tin tube as illustrated by aslong a string as possible just above a table or a window-sill. Steadying it with one hand, carefully remove bothcap and tube together from one lower hole with the otherhand, and let go of the tube at the same time. 24 INDUCTIVE PHYSICH.…
Physics
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