Sulla resistenza elettrica dei metalli nei diversi dielettrici 29 



TABELLA VI. bis 



# rf = ob , 139 # s = oh , 144 



P = S oh , 57 



Deviaz. corretta 



Petrolio l d , 90 



Aria 1, 68 



Differenza 0, 22 



Collocando p in derivazione: 

 a destra 58 d , 7 

 a sinistra 57 , 4 

 Media K = 58 , 



a = oh , 000093 



A = ul \ 000020 

 A =0, 00015 



TABELLA VII. 



Petrolio II. — Durata dell' esperimento : 30 ore. 



Numero 

 d' ordine 



TEMPERATURA 



Differenza 

 di temperatura 



DEVIAZIONE 



TUBO DESTRO j 



TUBO SINISTRO 



LETTA 



CORRETTA 







A R 



I A 







279 A 



26», 895 



26°, 870 



4- 0°, 025 



l d , 63 



l d ,75 



280 



26, 855 



26, 880 



- 0, 025 



1. 93 



1, 81 



281 



26, 885 



26, 900 



— 0, 015 



1, 80 



1, 73 



282 



26, 905 



26, 910 



— 0, 005 



1, 72 



1, 70 



283 



26, 925 



26, 920 



+ 0, 005 



1, 70 



1. 72 



284 



26, 925 



26, 930 



— 0, 005 



1, 71 1 



1. 68 



285 



26, 975 



26, 970 



+ 0, 005 



1, 65 



1, 67 



286 



26, 995 



27, 000 



— 0, 005 



1, 63 



1, 61 



299 C 



26, 895 



26, 880 



+ 0, 015 



l, 75 



1, 82 



300 



26, 975 



26, 950 



+ 0, 025 



1, 80 



1, 92 



301 



26, 985 



26, 970 



+ 0, 015 



1, 80 



1, S7 



302 



26, 855 



26 850 



+ 0. 005 



1, 87 



1, 89 



303 



26, 825 



26, 850 



- 0. 025 



2, 10 



1, 98 



304 



26, 825 



26, 850 



— 0, 025 



1, 90 



1. 78 



305 



26, 825 



26, 840 



— 0. 015 



1, 86 



1, 79 











Media 



1, 78 







P E T K 



L I 







291 B 



27, 075 



27, 070 



4- 0, 005 



1, 83 



1, 85 



292 



27, 095 



27. 090 



4- 0, 005 



1, 86 



1, 88 



293 



27, 085 



27, 090 



— 0, 005 



1, 90 



1. 88 



294 



26, 745 



26, 730 



4- 0, 015 



1, 93 



2, 00 



295 



26, 755 



26, 750 



+ 0, 005 



1, 94 



1. 96 



296 



26, 775 



26, 770 



+ 0, 005 



2, 00 



2, 02 











Media 



1, 93 



