Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 7, 2025
A skilful telegraphist can transmit twenty-five words a minute with the single-current key, and nearly twice as many by the double-current key, and if we remember that an average English word requires fifteen separate signals, the number will seem remarkable; but by means of Wheatstone's automatic sender 150 words or more can be sent in a minute.
A condenser joined in the circuit between the cable and the receiver, or between the receiver and the earth, has the effect of sharpening the waves of the current, and consequently of the signals. The double-current key, which reverses the poles of the battery and allows the signal currents to be of one length, that is to say, all "dots," is employed to send the message.
For a long time, in utter darkness, they climbed a winding stair. Durtal was wondering where the keeper had gone, when, turning a corner, he saw a shaft of light, then he stumbled against the rickety supports of a "double-current" lamp in front of a door. Des Hermies pulled a bell cord and the door swung back.
Word Of The Day
Others Looking