| No. | Tem. °C | P.D. (Volts | (Sec.) | cm./Sec. | |
|---|---|---|---|---|---|
| 1 | 23.07 | 6,650 | 16.50 | .6194 | 7-13 |
| 2 | 23.00 | 6,100 | 16.76 | .06099 | 8-11 |
| 3 | 23.05 | 5,308 | 19.73 | .5180 | 7-15 |
| 4 | 23.08 | 4,132 | 37.82 | .2703 | 4-6 |
| 5 | 23.06 | 4,661 | 40.09 | .02521 | 3-6 |
| 6 | 23.12 | 4,111 | 51.53 | .01983 | 3-4 |
| 7 | 23.08 | 5,299 | 51.48 | .01985 | 2-5 |
| 8 | 23.01 | 6,661 | 56.06 | .01823 | 2-3 |
| 9 | 23.00 | 6,082 | 59.14 | .01728 | 1-4 |
| 10 | 23.10 | 4,077 | 57.46 | .01779 | 3-8 |
| 11 | 23.13 | 4,663 | 16.58 | .06165 | 10-12 |
| 12 | 23.21 | 4,661 | 29.18 | .03502 | 5-7 |
| 13 | 22.98 | 4,687 | 18.81 | .05432 | 8-10 |
| 14 | 23.12 | 4,651 | 47.65 | .02145 | 2-7 |
| 15 | 23.10 | 4,658 | 32.72 | .03129 | 4-6 |
| 16 | 23.15 | 3,393 | 18.34 | .5572 | 12-16 |
| 17 | 23.12 | 4,669 | 46.82 | .02294 | 2-4 |
| 18 | 23.12 | 4,691 | 26.62 | .03819 | 5-7 |
| 19 | 23.10 | 3,339 | 14.10 | .07249 | 15-19 |
| 20 | 23.14 | 4,682 | 39.24 | .02605 | 3-5 |
| 21 | 23.14 | 3,350 | 18.30 | .05585 | 10-13 |
| 22 | 23.00 | 3,370 | 43.88 | .02329 | 3-6 |
| 23 | 23.00 | 3,370 | 43.88 | .02329 | 3-6 |
| 24 | 23.09 | 3,345 | 19.65 | .05201 | 9-12 |
| 25 | 23.15 | 3,344 | 26.76 | .03819 | 6-9 |
| No. | cm. | p (cm. Hg) | ||||
|---|---|---|---|---|---|---|
| 1 | 23.40 | 74.49 | 57.45 | .04111 | 63.21 | 61.03 |
| 2 | 23.22 | 75.00 | 57.5 | .04115 | 63.204 | 61.03 |
| 3 | 21.34 | 74.49 | 63.0 | .04509 | 63.54 | 61.16 |
| 4 | 15.33 | 75.37 | 86.7 | .06205 | 64.27 | 60.97 |
| 5 | 14.84 | 75.00 | 90.6 | .06484 | 64.63 | 61.21 |
| 6 | 13.05 | 75.77 | 101.3 | .06502 | 65.02 | 61.19 |
| 7 | 13.05 | 74.98 | 102.4 | .07329 | 65.07 | 61.20 |
| 8 | 12.50 | 75.40 | 106.3 | .07608 | 65.13 | 61.11 |
| 9 | 12.17 | 75.04 | 109.7 | .07850 | 65.19 | 61.05 |
| 10 | 12.34 | 75.67 | 107.3 | .07680 | 65.21 | 61.16 |
| 11 | 22.72 | 29.26 | 150.6 | .1078 | 66.70 | 61.01 |
| 12 | 17.08 | 36.61 | 160.1 | .1146 | 67.12 | 61.07 |
| 13 | 21.26 | 30.27 | 155.6 | .1114 | 67.14 | 61.26 |
| 14 | 13.20 | 36.80 | 206.4 | .1477 | 68.90 | 61.11 |
| 15 | 15.92 | 31.25 | 200.7 | .1437 | 68.97 | 61.39 |
| 16 | 21.11 | 20.58 | 227.8 | .1630 | 69.88 | 61.27 |
| 17 | 13.12 | 29.10 | 262.4 | .1878 | 70.85 | 60.94 |
| 18 | 17.32 | 20.54 | 281.4 | .2014 | 71.60 | 60.98 |
| 19 | 23.00 | 13.24 | 321.4 | .2297 | 73.34 | 61.20 |
| 20 | 14.00 | 20.72 | 345.4 | .2472 | 74.27 | 61.22 |
| 21 | 20.47 | 13.62 | 359.1 | .2570 | 74.54 | 60.97 |
| 22 | 13.17 | 20.47 | 371.5 | .2659 | 75.00 | 60.97 |
| 23 | 12.69 | 20.74 | 380.6 | .2724 | 75.62 | 61.24 |
| 24 | 19.65 | 13.12 | 388.5 | .2781 | 75.92 | 61.24 |
| 25 | 16.57 | 13.80 | 438.3 | .3137 | 77.94 | 61.18 |
Mean = 61.126.
Fig. 10
Let us now review, with Figs. [5] and [10] before us, the essential elements in the measurement of
. We discover, first, that electricity is atomic, and we measure the electron in terms of a characteristic speed for each droplet. To reduce these speed units to electrical terms, and thus obtain an absolute value of
, it is necessary to know how in a given medium and in a given field the speed due to a given charge on a drop is related to the size of the drop. This we know accurately from Stokes’s theory and Arnold’s experiments when the holes in the medium, that is, when the values of