e principle was soon adopted by electricians in the construction of the indicator telegraph.
Ampere, Arago, Schilling, Gauss, Weber, and Alexander all used the principle, but it received its perfected form by Cooke and Wheatstone, English patent, 1837.
The tendency of the magnetic needle in the vicinity of an electrically excited needle held parallel to it is to assume a position at right angles to the wire conveying the current.
By making the na diameter of 5 Austrian yards will spin 3,500 yards per minute.
It is used for many descriptions of fabric and for many purposes, cushions, carpets, table linen, shawls, neckties, etc.
Bonnet's European patents for cloth of glass are dated in 1837.
The warp is of silk, the weft of glass spun by steam-engine power, about sixty threads to the inch.
Stained-glass is colored in the process of manufacture.
Pointed-glass is a colored or white glass on which a metallic p