The Pharmaceutical era . s tin- return derice I. one win- niN-il U- irirciill. Tkt Tili»lM**. Ill which ikiiiimI un\rii al ni ml of n lim- may Kenerate adectric cnrn-iila which iraxel aloiiK a wire and ael upnew luiund wave* at the opiMialle end. The nirii In-•trunient connUlv of two part*, the (niimmirfrr and thertcetver. Thp lrlephoiii> In lln urirlnal fonn raniUleil of a barinacnet ?urrotin<le<l by a aiMiol of liiaulateil wire cuunocl- ekC-:rikite end ihese currents iu turn cause variations iu the magneticlii-ld. ciiusiliK the disk to alti-rnately ap|iroacli and reciilefrom the maK
The Pharmaceutical era . s tin- return derice I. one win- niN-il U- irirciill. Tkt Tili»lM**. Ill which ikiiiimI un\rii al ni ml of n lim- may Kenerate adectric cnrn-iila which iraxel aloiiK a wire and ael upnew luiund wave* at the opiMialle end. The nirii In-•trunient connUlv of two part*, the (niimmirfrr and thertcetver. Thp lrlephoiii> In lln urirlnal fonn raniUleil of a barinacnet ?urrotin<le<l by a aiMiol of liiaulateil wire cuunocl- ekC-:rikite end ihese currents iu turn cause variations iu the magneticlii-ld. ciiusiliK the disk to alti-rnately ap|iroacli and reciilefrom the maKnct. thus re|iro<liiciii|: tlie urieitial aonnil. waves. In sucii a circuit the transmitter is virtually adjnianio and the receiver a motor, and no battery is nec-i-ssary. In the modern instrument the current ig supplied by alA-danche tvll. the vibration of the metallic ilisk serv-inc only to vary the intensity of the current by varyingthe resistance in the c-irciiit. Another iniprovenieiit is the addition of an inductioncoil which fiirnishct the current for the line, the I.,e- 4-lanche cell simply siipplyiiis: tl urn-nt for the primary coil. The result of the ailditioii of the battery and in-diicHon coil is to increase the strength of the curreutswhich traverse the line, intens-ifyiiijr the vibration of the diskof the receiviiiB rciiilerinK ilic sounds pro-ilmed more distinct. The leted instrument in-Iliides. in addition to tlip partsalready describetl. a small dy-namo contained in rhe upprpart of the IPIk. the crank is tiirneil a> iirreiil is produce<l which riuKsI licll bot
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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1
