John Gray eBooks

Design of a Three-Inch Centrifugal Pump: Thesis. E-book. Formato PDF John Gray Sponsel   -  Forgotten Books, 2017  - 

General discussion of Friction and Impeller 1033. Page Determination of size/of Suction Pipe. Page Influence of the angles of the Impeller Blades, upon peripheral Velocity, Construction of Velocity Polygon at Exit, Construction of Velocity Polygon at Entrance, Construction of Impeller Vanes. Design of discharge Chambers Effect of Throttling upon the Efficiency and upon the Head.

Electrical Influence Machines: A Full Account of Their Historical Development, and Modern Forms, With Instructions for Making Them. E-book. Formato PDF John Gray   -  Forgotten Books, 2017  - 

Electricity has now become, in the words of a dis tinguished physicist a truly imperial science, in which physics and chemistry may be said to occupy the position of mere subordinate provinces. Clerk Maxwell, Hertz, and others have shown that the medium which transmits the waves of light is identical with that which conveys the waves of electric energy. The waves of light, in fact, differ only in their extreme minuteness, and their extreme rapidity from the electric waves produced by an alternating current dynamo machine or an induction coil, and the ?ame of a candle or of a gas jet, in which electric oscillations are caused by the impact of atoms has as good a claim to be called electric light, as the glow Of the incandescent carbon filament or of the electric arc, in which identical oscillations are generated by the passage Of the So-called electric current.