seen that by tion in the magnetic flux and sets up a series of pul- using one or the other set of magnets, the first or sating currents in the circuit, corresponding in form second series of components may be received, that is to of wave with the preceding, and thus a sound may be Fig. 1—DIAGRAM… … SECTION OF MAGNET xh peroxide of lead has been formed ; this form is consid- meter ; the wire makes about 380 turns. The carriage ered as more solid an@ will permit of discharging ata containing the electro-magnet slides upon a rod which ® \ , F Msie wew greater rate, while at the samme time a…
Internet Archive · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten02unit-422-192.webp)
