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Updated: June 14, 2025
Mal and Zani looked from the face of Soames to that of Gail, and back again. "They understand more than they can speak," said Gail. Soames searched the walls of the room. Gail had said microphones were probable. He looked intently at Zani. He duplicated her position when he'd entered and her actions, the quick movement of her hand to her pocket and the opening of her eyes.
Third in the list of defences of the British coast, or of any other coast which may at any time be threatened with an aërial raid, are defensive stations equipped not only with anti-aircraft guns and searchlights but with batteries of strange new scientific instruments like the "listening towers," equipped with huge microphones to magnify the sound of the motors of approaching aircraft so that they would be heard long before they could be seen, range finders, and other devices for the purpose of gauging the distance and fixing the direction of an approaching enemy.
As he saw the men of the press approaching with their microphones, lights, cameras and TV equipment, he gripped Bart urgently by the arm. "We can still salvage something! Don't talk any more! Refer them to me say I'm your guardian and your business manager you can still make something of this " "That's just what I don't want to do," Bart replied, and broke away from him to approach the newsmen.
He made no protest, but stepped at once to one of the microphones, put on his most impressive professional face, and began: "My friends" and Van Emmon noted a pleased look come into every face about them "my friends, I do not need to state how significant this meeting is to us all.
"Except the ship we're welded to! But you are doing very well. However, microphones say there is movement inside the Plumie." Diane beckoned for Baird's attention to a screen, which Baird had examined before. Now he stiffened and motioned for her to report. "We've a scanner, sir," said Diane, "which faces what looks like a port in the Plumie ship. There's a figure at the port.
"The one thing, you may not know, that has kept us back while wireless telegraphy has gone ahead so fast is that in wireless we have been able to discard coherers and relays and use detectors and microphones in their places. But in telautomatics we have to keep the coherer. That has been the barrier.
Mindful that their conversation was doubtless the object of attention on the part of the ruling powers of the city through spies and concealed microphones, they were careful to discuss trivial matters most of the time, and mentioned their problem only when alone in the open spaces of the park.
Benjamin Warwick, been conducting a most interesting experimental investigation of the action of the microphone as a telephonic transmitter, with the result of proving that metals may advantageously be employed in the place of carbon in a transmitting instrument, a practical development of one of the very earliest of Professor Hughes' microphones.
"That is all right," exclaimed the professor. "I thought it would be convenient if we could communicate freely with each other under water, so I introduced a couple of small microphones into each helmet, hoping they would answer the purpose. Mine are simply perfect, but I was anxious to know if yours were also. Now, if you are quite ready I will open the door."
The fact that a microphone is reversible and can act as a receiver, though a poor one, tends to confirm this theory. Moreover, it is not unlikely that the slipping of the stylus in the electromotograph is due to a similar cause. Be this as it may, there can be no doubt that carbon powder and the lamp-black of the Edison button are essentially a cluster of microphones.
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