United States or Democratic Republic of the Congo ? Vote for the TOP Country of the Week !
The circulation per capita has increased about $5 during the time covered by the table referred to. The total coinage of silver dollars was on November 1, 1889, $343,638,001, of which $283,539,521 were in the Treasury vaults and $60,098,480 were in circulation.
Connect the + or positive electrode of the A battery with one post of the .001 mfd. fixed condenser and connect the other post of this to one of the ends of the secondary coil of the tuning coil and which is now known as the tickler coil; then connect the other end of the secondary, or tickler coil to the plate of the vacuum tube. An Efficient Regenerative Receiving Set.
Fractional currency for the sinking fund 109,001.05 Loan of February, 1861 7,418,000.00 Ten-forties of 1864 2,016,150.00 Five-twenties of 1862 18,300.00 Five-twenties of 1864 3,400.00 Five-twenties of 1865 37,300.00 Consols of 1865 143,150.00 Consols of 1867 959,150.00 Consols of 1868 337,400.00 Texan indemnity stock 1,000.00
Not a single or undisputed skeleton of an ape-man! If each of the two eyes and ears as well as the nose and the mouth occupy, on an average, one-thousandth part of the surface of the body, what, if we exclude God's design, is the mathematical probability that they would appear where they are? Ans. .OO1 x .OO1 x .001 x .001 x .001 x .001; =.000,000,000,000,000,001; or 1 chance in a billion billion!
Now connect the end of the tuning coil that leads to the ammeter with one end of the .001 mfd. grid condenser and the other end of this with the grid of the vacuum tube. Connect the telegraph key, the buzzer and the dry cell in series and then shunt them around the grid condenser.
Get two honeycomb or other coils of the greatest wave length you want to receive, for in order to properly balance the aerial, or primary oscillation circuit, and the closed, or secondary oscillation circuit, you have to tune them to the same wave length; two .001 mfd. variable condensers, though fixed condensers will do, and two small single-throw double-pole knife switches mounted on porcelain bases.
As for the negative plate, its thickness is the most important factor of its capacity. The proportion has yet to be established for daily practice. The inventor uses in practice positive plates of 0.002 meter in thickness. On the other hand, the negative plates have a body of only 0.001 meter in thickness, their greater thickness being due only to the deposit of compressed lead.
A square meter of lead of the thickness of 0.001 meter weighs about 11 kilos. As both surfaces of the lead are utilized, their weight is reduced to 5½ kilos. A No. 10 therefore requires 55 kilos. of useful lead.
Now connect one end of the tickler coil with the detector plate and the other post to the fixed .001 mfd. condenser, then the other end of this to the positive or carbon pole of the B battery. Finally, shunt the head phones and the .001 mfd. fixed condenser and you are ready to try out conclusions. A Regenerative Audio Frequency Amplifier Receiving Set.
For this set you require: one variocoupler; two variometers; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one 2 megohm grid leak resistance; one vacuum tube detector; one 6 volt A battery; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, and one pair of 2,000 ohm headphones.
Word Of The Day