THE DEPENDENCE OF THE RESISTANCE OF SILVER 
FILMS UPON THE METHOD OF DEPOSITION 
G. R. WAIT 
ABSTRACT 
1. Most observers investigating the specific resistance in thin 
metallic f^lms have found that it decreases rapidly with time. 
In the present investigation Brashear’s process of obtaining silver 
films was followed. Figure 39 shows how the resistance of a 
typical film changes with time. 
2. The method mentioned above was modified somewhat; (a) 
by the addition of double the amount of sodium hydroxide stip- 
ulated; (b) by going over the surface of the glass upon which 
the film is to be deposited, after it is in solution, with a glass 
brush, thus freeing the surface of small air bubbles; (c) by 
keeping the temperature of the solution below 60° F. 
3. Figure 40 shows films obtained by Brashear’s process un- 
modified (points marked . ), and films obtained by the process 
