Some messages from messengers

Usage examples of wires.

Pupin, of Columbia University, whose brilliant invention of the loading coil some ten years before had startled the scientific world and had increased the range of telephonic transmission through underground cables and through overhead wires far beyond what had formerly been possible.

Use the jaws of the pliers to press parallel wires in the twist together, and to tighten the twist.

Twist these wires once and a half around the headsize wire, bringing the ends up at right angles to the headsize wire.

Join the second headsize wire to the top of these wires, using the same method as for joining the edge wire.

A finer wire is sometimes used in this case, or a beautiful frame may be made for thin materials by using a satin-covered cable wire, and using as few wires as possible.

If the brim is to roll closely on one side and much higher than on the other, extra wires will be needed to fill the space.

There are also gold and silver wires which may be used for frames when desired, and which will add to the beauty of the design.

The wires of a frame are often first wound with narrow bias pieces of net or maline.

It is the story of great men--Morse, Thomson, Bell, Marconi, and others--and how, with the aid of men like Field, Vail, Catty, Pupin, the scientist, and others in both the technical and commercial fields, they succeeded in flashing both messages and speech around the world, with wires and without wires.

The wires could be charged from an electrical machine in any desired order, and at the receiving end would attract disks of paper marked with the letter which that wire represented, and so any message could be spelled out.

Five wires, with a sixth return wire, were used in the first experimental line erected in London in 1837.

He also devised a method for measuring the resistance which wires offer to the passage of an electric current.

Professor Henry realized, in common with Morse and others, that if the current were to be conducted over long wires for considerable distances it would become so weak that it would not operate a receiver.

By 1837 Morse had completed a model, had improved his apparatus, had secured stronger batteries and longer wires, and mastered the use of the relay.

While working and waiting and saving, Morse conceived the idea of laying telegraph wires beneath the water.