194 



INDEX 



Thomson, E., 148. 



Thomson, Sir J. J., 156, 170, 176. 



Titanium arc, 68. 



Tobey and Walbridge, 107. 



Todd, Duncan, Rowland and, 73. 



Tommasi, 48. 



Townsend, 158, 173. 



Trotter, 51, 129. 



U 

 Ultra-violet light: 



produced by arc, too. 



ionization by, 172. 

 Unlike electrodes, 69, 118. 

 Uppenborn, 24. 

 Upson, 63. 

 Urbain, Seal and Feige, 103. 



Vacuum, arc in, 74, 81, 117. 



Van Breda, 74. 



Variation in temperature of arc, 



44- 



Veillon, Hagenbach and, 64. 

 Velocity of ions in: 



mercury arc, 101. 



carbon arc, 177. 

 Very, 43. 



Vinal, Cody and, 65. 

 Violle, 42. 



Voltage of arcs, see Potential differ- 

 ence between terminals. 

 Von Lang, 29, 63. 



W 



Waidner and Burgess, 43, 173. 



Walbridge, Tobey and, 107. 



Walker, 50. 



Wanner, 43. 



Wave form and candle power, 137. 



Wedding, 133. 



Wedding, Rossler and, 137. 



Weedon, 69, 85, 179. 



Wehnelt, 159. 



Weintraub, 82, 122. 



Wey, 88. 



Whispering arc, 146. 



Whistling arc, 148. 



Wien's law, 42. 



Wild, 36. 



Wilde, 51. 



Wills, 92. 



Wilson and Gray, 41. 



Wilson and Fitzgerald, 45, 73. 



Wilson, H. A., 160. 



Wilson, W. E., 45, 132. 



Wireless telephony, use of arc in, 



146. 



Wood's metal, arc with, 82. 

 Wurts, 114. 



Zebriko/, Guye and, 63. 



