Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 111
zed holds upa steel ball, which is released on breaking the cir-cuit by a knife switch S. The ball in its descentBUPH falls through a trap B, which may be adjusted at any desiredC distance be- low A, thedistance ABbeing readoff on afixed box-wood scalegraduated inmillimeters.The trap Bis so… … r=L LAW OF frp:ely falling bodies 109 first, of an induction coil C, the prinicary coil of which is con-nected in series first with A, and immediately afterward withB. When the circuit through A or 5 is broken, the currentinduced in the secondary of the coil causes a spark to passacross its…
Physics · Mechanics
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-455-226.webp)
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-336-207.webp)
