Conditions of sensibility of photo-electric cells with alkali metals and hydrogen . 1 30.5 620 114.0 326 140.0 330 200.0 374 192,0 432 38.0 630 133.0 327 192.0 331 280.0 375 168.0 328 off 332 193.0 329 off 330 73.0 324 190.0 331 •-I ,^ 7, ^ 774 r TABLE NO. VXVIII. Potassium Cell Ko. 4. Af t- r Forming. D = 0.5 cm. t - 35C. L = 0,22 C.f, A = 4.35 cm^. #Criticnl voltigs ind current. d in ram. V in ^?ol ts. p = 1, 0 mm. V - - 3, 0 rcrn. P = 5. 0 rirn. P = 10 mm. d V :1 / 1.0 150 1.0 165 1.0 19 6 1.0 200 0.5 350 3.0 320 4.0 250 3.5 265 4.5 319 1,0 312 7.5 370 8.0 371 5.5 289 11. C 350 2,0 361 13.5

Conditions of sensibility of photo-electric cells with alkali metals and hydrogen . 1 30.5 620 114.0 326 140.0 330 200.0 374 192,0 432 38.0 630 133.0 327 192.0 331 280.0 375 168.0 328 off 332 193.0 329 off 330 73.0 324 190.0 331 •-I ,^ 7, ^ 774 r TABLE NO. VXVIII. Potassium Cell Ko. 4. Af t- r Forming. D = 0.5 cm. t - 35C. L = 0,22 C.f, A = 4.35 cm^. #Criticnl voltigs ind current. d in ram. V in ^?ol ts. p = 1, 0 mm. V - - 3, 0 rcrn. P = 5. 0 rirn. P = 10 mm. d V :1 / 1.0 150 1.0 165 1.0 19 6 1.0 200 0.5 350 3.0 320 4.0 250 3.5 265 4.5 319 1,0 312 7.5 370 8.0 371 5.5 289 11. C 350 2,0 361 13.5 Stock Photo
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Conditions of sensibility of photo-electric cells with alkali metals and hydrogen . 1 30.5 620 114.0 326 140.0 330 200.0 374 192, 0 432 38.0 630 133.0 327 192.0 331 280.0 375 168.0 328 off 332 193.0 329 off 330 73.0 324 190.0 331 •-I , ^ 7, ^ 774 r TABLE NO. VXVIII. Potassium Cell Ko. 4. Af t- r Forming. D = 0.5 cm. t - 35C. L = 0, 22 C.f, A = 4.35 cm^. #Criticnl voltigs ind current. d in ram. V in ^?ol ts. p = 1, 0 mm. V - - 3, 0 rcrn. P = 5. 0 rirn. P = 10 mm. d V :1 / 1.0 150 1.0 165 1.0 19 6 1.0 200 0.5 350 3.0 320 4.0 250 3.5 265 4.5 319 1, 0 312 7.5 370 8.0 371 5.5 289 11. C 350 2, 0 361 13.5 286 13.0 380 10.0 305 20, 0 361 3, 0 388 21.0 3S5 31.0 385 16.0 315 35.0 367 5.5 420 37.0 300 31.0 390 22.0 320 54.0 370 9.0 440 55, 0 303 55.0 294 32.0 322 84.0 372 12.0 451 70.0 305 . 91.0 295 54.0 326 136.0 374 21.5 455 102.0 306 125.0 296 71.0 327 270.0 375 30.0 470 117.0 307 140.0 29 7 90.0 338 38.0 472 145.0 308 194.0 298 115.0 329 62, 0 475 168.0 309 off 299 185.0 330 73.0 47 6 off 310 off 331 99.0 477 155.0 478 280.0 479 55, 0 12 3.0 0 ff 331 270.0 375 280.0 4-^9. ei