Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 729
o measure-ments gives the time sought. This indirect method of ascertaining theresult is the characteristic of the instrument and explains its accuracy.When the rupture of the currents is produced by the projectile the portion(D) of the trajectory between the targets is regarded as rectilinear and… … FlG. 4. Connections of Boulenge Chronograph. CHRONOGRAPHS. 717 Schultz Chronoscope. The Boulenge chronograph measures velocity at one point only, but it isfrequently necessary to measure the velocity of the same projectile atdifferent points as in determining the laws of the resistance of the air…
Electrical engineering
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