. Report of the fifty-fourth meeting of the British Association for the Advancement of Science [microform] : held at Montreal in August and September 1884. Congresses and conventions; Science; Congrès et conférences; Sciences. ^â ^^^ Ki, coiiiiH-ii^^itcur (' ciii'scm'. i: rheostat. I'Ki. C. Diiv^niiu of rdlat's ^k'tliud. I-KUKNUE. i m iiit('rni|>tiiir. I r Icuille d'or. ' A a' iiliUcaux do rt'loctroscopc. 1' pik's l);iiiicll i'uuriii^saiU \o. itmiMiit dii ; i'» l> liattuiies di' li)() volts cliacuno pour ('iiiii|ifii>ati'iir. "â â â rw-Kn charger ; platoau-x
. Report of the fifty-fourth meeting of the British Association for the Advancement of Science [microform] : held at Montreal in August and September 1884. Congresses and conventions; Science; Congrès et conférences; Sciences. ^â ^^^ Ki, coiiiiH-ii^^itcur (' ciii'scm'. i: rheostat. I'Ki. C. Diiv^niiu of rdlat's ^k'tliud. I-KUKNUE. i m iiit('rni|>tiiir. I r Icuille d'or. ' A a' iiliUcaux do rt'loctroscopc. 1' pik's l);iiiicll i'uuriii^saiU \o. itmiMiit dii ; i'» l> liattuiies di' li)() volts cliacuno pour ('iiiii|ifii>ati'iir. "â â â rw-Kn charger ; platoau-x .V a'. ji'p plalcaiix dii condelisateiir (/' mobile). Tlip (linsi'iiiii Vi'^. (1 jtretty well explains itself. The contact at m is hrokeii the instant liefore J)' is raised. c. - - -I V - - -1 Fi(i. IVUiU's C'ondi'nser. I'ig. 7 .-hows Iiow this was done in practice. I'ullinir tlio string .\ raises a slidin;^ pin with ii shoidder </ lixcd to it n niiilinietrc Ix'low the har it. 'I'lie pin thus lirst lircaks contact near M. and then raises the iiin;j;ed liar it i;, to which the upper .m is attached. The njiper plate, licinir always in coiiTicclion with a liiltcry, reipiircs no special in-ulalion. 'I'he lower l)latc is carefully supported liy a Thomson insulator i. The lower plate was consi'lerahly smaller than the upper oni', and it was further protected from stray inductions hy a guard screen. Screws c c served to rc,i;iilutc tlu' distance helween the plates. neutralising tho charge of a condenser by a PoggendorfT or compensation method, and thus converts Kohlrausch's into a null method, for which a very sensitive electroscope is all that is needed. The plates of tho two Louis le Grand, Xo. 401 : .Tnin 2L', 1 SSI. Sec also Journal dr Phyitiquc, 1 Sa 1, xvi. p. OS, iind Jlay ISSO. ' Ditlorenco do potent id des couches 61ectri(] qui rccoiiMont doux mC'taux cu contact.' â ⢠m '-^ 111. Please note that these images are extracted from scanned page im
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1885
