Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera
Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera
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In our eReader you can find the full English version of the book. Read Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera
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To quickly assess the difficulty of the text, read a short excerpt:
(170. ) The second method is very convenient and is much used, although not equal in strict accuracy to the third method. The galvanometer coils are wound with two wires of the same length and resistance, insulated from each other with the utmost care. The needle is there- fore surrounded by an equal number of convolutions of each wire, which are also equidistant from it. One end of each wire is connected to the battery, but in such a manner that the current flows in opposite direc- tions throu...gh the two wires. When, therefore, the two currents are of equal strength, one tends to deflect the needle to the right and the other to the left with equal power, and the needle remains at rest. If we insert an unknown resistance into the circuit of one of these wires the current is weakened, as is also its effect on the needle, which no longer remains balanced and at rest, but is deflected to one side. If we now insert a series of known resistances into the circuit of the other wire, until the needle is again brought into equilibrium, we are certain that the unknown resistance in one cir- cuit is exactly equal to the known resistance in the other.
What to read after Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera?
You can find similar books in the "Read Also" column, or choose other free books by Frank L Franklin Leonard Pope to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
(170. ) The second method is very convenient and is much used, although not equal in strict accuracy to the third method. The galvanometer coils are wound with two wires of the same length and resistance, insulated from each other with the utmost care. The needle is there- fore surrounded by an equal number of convolutions of each wire, which are also equidistant from it. One end of each wire is connected to the battery, but in such a manner that the current flows in opposite direc- tions throu...gh the two wires. When, therefore, the two currents are of equal strength, one tends to deflect the needle to the right and the other to the left with equal power, and the needle remains at rest. If we insert an unknown resistance into the circuit of one of these wires the current is weakened, as is also its effect on the needle, which no longer remains balanced and at rest, but is deflected to one side. If we now insert a series of known resistances into the circuit of the other wire, until the needle is again brought into equilibrium, we are certain that the unknown resistance in one cir- cuit is exactly equal to the known resistance in the other.
What to read after Modern Practice of the Electric Telegraph a Handbook for Electricians And Opera?
You can find similar books in the "Read Also" column, or choose other free books by Frank L Franklin Leonard Pope to read onlineMoreLess
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