...incxpcnsivi' form of annunciator. The next two are pieces of polarised mechanism having a motion directed to one side or the other, according to the direction of the current. From the back-board project« a small straight electro-magnet. Over it is pivoted a small arched steel...

...The index carried by the needle is a flat brass plate, horizontal when no current passes, and tipped to one side or the other according to the direction of the current when it flows. The double key is so arranged that the subscribers can be rung separately or both at...

...attached which are called the sheett, C C. These being drawn tight, spread oat the foot of the sail to one side or the other, according to the direc-tion of the wind, and the tack the ship is on ; the valves have also their tackle ; and, in short, we shall find...

...part of the wire would neutralize that of the other, for it has already been stated that the needle is deflected to one side or the other according to the direction of the electrical current. And this would in fact be the case, if the returning part of the wire were upon...

...voltaic electricity is caused to pass through the circuit, and, therefore, through the metallic leaf, D, included in it, the metallic leaf is deflected to...current. And the distinct motions so obtained may bo repeated and combined, and used for the purpose of designating letters or figures, or other conventional...

...is caused to pass through the circuit, and, therefore, through the metallic leaf included in it, the leaf is deflected to one side or the other, according to the direction of the current ; and the motions thus produced may be repeated and combined, and used for the purpose of indicating letters,...

...to pass through the circuit, and therefore through the metallic leaf d, included in it, the leaf d, is deflected to one side or the other, according to the direction of the current ; and the motions thus produced may be repeated and combined, and used for the purpose of indicating letters,...

...to pass through the circuit, and therefore through the metallic leaf d, included in it, the leaf d, is deflected to one side or the other, according to the direction of the current ; and the motions thus produced may be repeated and combined, and used for the purpose of indicating letters,...

...to pass through the circuit, and therefore through the metallic leaf d, included in it, the leaf d, is deflected to one side or the other, according to the direction of the current; and the motions thus produced may be repeated and combined, and used for the purpose of indicating letters,...

...along a wire, placed parallel and near to a magnetic needle, free to turn on its centre, the needle is deflected to one side or the other, according to the direction in which the current is transmitted. A single wire has but small power on the needle; but Professor...