﻿Motion of Electrons in Carbon Dioxide. 



995 



The calculation of this curve will be explained in a future 

 paper by Prof. J. S. Townsend and Mr. V. A. Bailey. 



In order to find the velocity of the electrons in the direc- 

 tion of the electric force, two different magnetic forces may 

 be used. With this eccentricity of Ob" millimetre the stream 

 may be deflected 1*9 millimetres to the left or 3*1 millimetres 

 to the right. In these experiments all doflexions were to the 

 right, as the determinations with the larger deflexions are 

 the more accurate. 



The results of the experiment are given in Table I., where 



p is the pressure in millimetres of mercury, 



k the factor by which the kinetic energy of the electron 



exceeds the kinetic energy of a molecule of a gas at 



15° C, 

 W the velocity of the electrons in the direction of the 



electric force in centimetres per second. 



Z. 



Table I. 



z/ P . 



WxlO 



-5 



20-23 



9-82 



416 



2-08 



0-206 

 0222 



119 



1-283 



1-18 



9-82 

 6-06 



416 

 208 



0-444 

 0411 



1-29 

 1-277 



2-41 

 2-45 



982 



5-061 



2-49 



8-33 

 416 

 2-08 



0-888 

 822 

 0-835 



1-36 

 1-36 



4-91 

 4-55 

 4-67 



5-06 

 2-49 

 1-26 



8-33 

 4-16 

 2-08 



1-647 



1-67 



1-66 



1-72 



1-64 



9-42 

 981 

 9-47 



5-06 



2-49 



1-26 



•62 



16-67 

 8-33 

 4-16 

 2-08 



3-30 

 3-^2 

 3-29 

 3-32 



2-88 

 279 

 2-89 



22-4 



238 

 23-6 

 24-5 



2-49 



1-26 



•63 



1667 

 8-33 

 416 



6-64 

 6-59 

 6-64 



221 

 211 

 231 



82-4 

 82-4 

 81-4 



2-49 

 1-26 



33-33 

 16-67 



13-4 

 132 



60-6 

 601 



118 

 124 



1-26 

 •63 



33-33 

 16-67 



26-4 

 26-6 



81-3 

 91 



142 

 150 



•63 



3333 



53-2 



147 



202 



