Page:Cathode Rays.pdf/14

obtained in this tube are given in the Table under the heading Tube 3.

The results of a series of measurements with these tubes are given in the following Table:—

Gas.	Value of W/Q.	I.	m/e	v.
Tube 1.
Air.........................	4.60×1011	230	.57 ×10-7	4.0×109
Air.........................	1.80× 1212	350	.34 ×10-7	1.0×1010
Air.........................	6.10×1011	230	.43 ×10-7	5.4×109
Air.........................	2.50×1012	400	.32 ×10-7	1.2×1010
Air.........................	5.50×1011	230	.48 ×10-7	4.8×109
Air.........................	1.00×1012	285	.40 ×10-7	7.0×109
Air.........................	1.00×1012	285	.40 ×10-7	7.0×109
Hydrogen .............	6.00×1012	205	.35 ×10-7	6.0×109
Hydrogen .............	2.10×1012	460	.50 ×10-7	9.2×109
Carbonic acid .......	8.40×1011	260	.40 ×10-7	7.5×109
Carbonic acid .......	1.47×1012	340	.40 ×10-7	8.5×109
Carbonic acid .......	3.00×1012	480	.39 ×10-7	1.3×1010
Tube 2.
Air.........................	2.80×1011	175	.53×10-7	3.3×109
Air.........................	4.40×1011	195	.47×10-7	4.1×109
Air.........................	3.50×1011	181	.47×10-7	3.8×109
Hydrogen .............	2.80×1011	175	.53×10-7	3.3×109
Air.........................	2.50×1011	160	.51×10-7	3.1×109
Carbonic acid .......	2.00×1011	148	.54×10-7	2.5×109
Air.........................	1.80×1011	151	.63×10-7	2.3×109
Hydrogen .............	2.80×1011	175	.53×10-7	3.3×109
Hydrogen .............	4.40×1011	201	.46×10-7	4.4×109
Air.........................	2.50×1011	176	.61×10-7	2.8×109
Air.........................	4.20×1011	200	.48×10-7	4.1×109
Tube 3.
Air.........................	2.50×1011	220	.9 ×10-7	2.4×109
Air.........................	3.50×1011	225	.7 ×10-7	3.2×109
Hydrogen .............	3.00×1011	250	1.0 ×10-7	2.5×109