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When No. 1 was installed there was a row of columns from the basement floor to the main floor extending in a plane which came directly in front of the condenser. The column P shown in the plan was so located as to prevent a direct connection between the centrifugal circulating pump and the condenser inlet.
Soon after sunset on the 27th, from the branches of a high gum tree we sighted the Pinnacles almost dead on our course; and late that night we reached the lake, and found to our joy a condenser already established, by means of which two men earned a precarious livelihood by selling water to travellers for these lakes were on the direct track from Kurnalpi to the Mount Margaret district.
These include: A thorough examination of the air-pump, and, if possible, an equally careful examination of diagrams taken from it when running on full load. Also careful examination of the piping, and of any other connections between the air pump and condenser, or other auxiliaries.
The paper and tin-foil are then pressed together and impregnated with an insulating compound. A fixed condenser of the exact capacitance required for connecting across the head phones is mounted in a base fitted with binding posts, as shown at B, and costs 75 cents.
I did not obtain any experimental evidence with condenser discharges. A luminous band excited in a bulb by repeated discharges of a Leyden jar must possess rigidity, and if deformed and suddenly released should vibrate. But probably the amount of vibrating matter is so small that in spite of the extreme speed the inertia cannot prominently assert itself.
Bennie watched the words as the electrician's pencil scrawled along on the paper. "Waiting for you. Why don't you send? "They must have called us before while the discharge was running down," muttered Atterbury. "I think we can send with the condenser now." He picked up the scrap of yellow paper, read it over, and threw out into space the message which he did not understand. "O. K. Wait.
A Simple Vacuum Tube Receiving Set. For this set you should use: a loose coupled tuning coil, a variable condenser, a vacuum tube detector, an A or storage battery giving 6 volts, a B or dry cell battery giving 22-1/2 volts, a rheostat for varying the storage battery current, and a pair of 2,000-ohm head telephone receivers. The Vacuum Tube Detector. With Two Electrodes.
Certainly it must be incomparably smaller than that of the knocks of the bell and the sound vibrations, or that of the discharges and the oscillations of the condenser.
Simultaneously, and, of course, as a consequence of the foregoing actions, the home neutral relay itself may have had its magnetism reversed several times, and the SIGNAL, that is, the dash, will have been made, partly by the home battery, partly by the distant and home batteries combined, partly by current on the main line, partly by current on the artificial line, partly by the main-line 'static' current, partly by the condenser static current, and yet, on a well-adjusted circuit the dash will have been produced on the quadruplex sounder as clearly as any dash on an ordinary single-wire sounder."
As the capacitance and the inductance of the circuit, which may be made of any value, that is amount, you wish, determines the time period, that is, the length of time for a current to make one complete oscillation, it must be clear that by varying the values of the condenser and the inductance coil you can make the high frequency current oscillate as fast or as slow as you wish within certain limits.
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