What the hell, if hand signals and the language of smiles could do the trick, she'd make a fine employee.
Elise gave a few hand signals to her detail.
Elise and Dan were a good team, relaying hand signals and other silent communications with nothing more than a glance at each other.
Etymologically the word implies that the messages are written, but its earliest use was of appliances that depended on visual signals, such as the semaphore or optical telegraph of Claude Chappe.
When signals are to be sent from either station the operator turns the switch c out of contact with the stop b, and then operates precisely as in open circuit send '" i ing.
In such cases it is usual to employ a local battery to produce the signals, and to close the local battery circuit by means of a relay working.
Worked double current - that is, with the tongue set neutral, having no bias either to the spacing or marking side - the relay will give good signals with 12 milliampere of current, though in practice 10 milliamperes are provided.
The result is that the armature of the relay is attracted, and currents are sent through the sounder from the local battery, producing the signals from the distant station.
A method of recording signals in the Morse code, formerly used to a considerable extent, was to use a chemically prepared ribbon of paper.
It was found impossible to make the Morse ink writer so sensitive that it could record signals sent over land lines of several hundred miles in length, if the speed of transmission was very much faster than that which could be effected by hand, and this led to the adoption of automatic methods of transmission.
In this manner the signals are read by ear.
They made no sounds at all, either in flying or trying to speak, and they conversed mainly by means of quick signals made with their wooden fingers or lips.
He tried to make signals to them; he called as loudly as he could; but he was neither seen nor heard, and the ships came no nearer.
It further assumes that non-state groups don't get nuclear weapons, that nuclear weapon facilities don't accidently launch, and that false-positive launch signals aren't generated.