[PrevPage] [Next] [INDEX ]  Volume 1   20 Mar. 1876    Page 59  [Source] [ NOTES ]
    of free motion, then the vibrations of M will be copied by S; and the sound resulting from the vibration of S wil be similar to that which occasioned the vibration of M.

  1. In order to obtain the best available effect from S ­ the amplitude of the vibration of S should be as great as possible. Hence the amplitude of the electrical undulations traversing the circuit a b c d e f g h i k, should be large; or in other words, the difference between the maximum and minimum of intensity in the current should be as great as possible.

  2. By Ohm's Law we find that (I) the intensity of a current is equal to (E) the electro-motive force devided by (R) the resistance of the circuit.
    I=E/R

  3. The total resistance (R) of the circuit abcdefghik, (Fig I) consists of (B) the internal resistance of the battery, (L) the resistance of the line and the instruments upon it, and (W) the resistance of the water
[PrevPage] [Next] [INDEX ]  Volume 1   20 Mar. 1876    Page 59  [Source] [ NOTES ]