55
Barkla, Phil. Mag. June, 1903.
CHAPTER III. METHODS OF MEASUREMENT.
1
Soddy, Trans. Chem. Soc. Vol. 81, p. 860, 1902.
2
Wilson, Proc. Roy. Soc. Vol. 68, p. 152, 1901.
3
If the apparatus is required to be air-tight, the gold-leaf system can be charged by means of a piece of magnetized steel wire, which is made to touch the rod R by the approach of a magnet.
4
It is sometimes observed that the motion of the gold-leaf, immediately after charging, is irregular. In many cases, this can be traced to air currents set up in the electroscope in consequence of unsymmetrical heating by the source of light used for illumination.
5
Wilson, Proc. Camb. Phil. Soc. Vol. 12, Part II. 1903.
6
Walker, Phil. Mag. Aug. 1903.
7
Strutt, Phil. Trans. A, p. 507, 1901.
8
Dolezalek, Instrumentenkunde, p. 345, Dec. 1901.