Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 555
the diagram. depths, from a sufficient number of which In (1) the lower float is a barrel with both heads out, weighted so as to float up- we may determine the mean velocity. This can also be found by employing a right; (2) and (3) are very convenient floating staff weighted so as to float per-… … ened ; a small orifice closed with a plug tions in salt water, copper instead of tin allows the admission of water for sub- floats are preferable, as those made of tin merging them. The surface float of (3) corrode very rapidly. Wire should gen- while offering but little surface to the ac- erally…
Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
