222 Prof. Millikan : New Modification of the Cloud Method 

 Table (continued). 



Series No. 3 (Bal. pos. alcohol drops). ISeries No. 4 (Bal. pos. water drops), 

 Distance between plates -463 cm. Distance between plates '545 cm. 



Measured distance of fall 1 cm. Measured distance of fall -155 cm. 



Density of alcohol "bOo cm. 

 Volts applied to plates ■2335. 



Times of fall of balanced drop. 



*3-8 sec. 

 *3"8 sec. 



4'0 sec. 

 *3'8 sec. 

 **38 sec. 



30 sec. 



Observer. 

 Millikan. 



^"o"© sec. 

 *3'8 sec. 



3-8 sec. 



3 - 6 sec. 



4*0 sec. 



3-S 



Observer. 

 Begcman. 



Volts. 



2365 



---2365 



**2365 



2365 

 **2365 



2::65 



lime. 



Time. 



1 space. 



2 spaces. 



1*6 sec. 



3-2 sec. 



1-6 sec. 



3*2 sec. | 



16 sec. 



3 4 sec. 



1*6 sec. 



3*4 sec. 



1*6 sec. 



32 sec. 



1-6 



3-28 



Observer. 

 Millikan. 



.•.c=9-281xl0- 10 H-2=4'64xl0" 10 . 



i 



Mean time for '155 cm. =3*25 sec. 

 .-9. 980-3 .. /-155\l 



I =2444xl0- 10 . 

 .•.e=2414xl0- 10 ^5=4-83xl0- 1 *. 



Series No. 5 (Bal. pos. water drops) 

 Distance between plates '545 cm. 

 Measured distance of fall -155 cm. 



IjSeeies No. 6 (Bal. pos. water drops), 

 Distance between plates '545 cm. 

 Measured distance of fall -155 cm. 



Volts. 



Time. 



Time. 



Observer. 



! Volts. 



Time. 



Time. 



Observer. 





1 space. 



2 spaces. 







1 space. 



2 spaces. 





2295 



3-0 sec. 



6'2 sec. 



Begeman. 



**2395 



1*4 sec. 



2-8 sec. 



Begeman. 



2295 



3-0 sec. 



6'0 sec. 



„ 



2395 



1*5 sec. 



3'0 sec. 



„ 











*2395 



1*4 sec. 



3 - sec. 



„ 



2295 



3-0 



61 





2395 



1-43 



2-93 





Mean time for -155 cm. 607 sec. 



Mean time for - 155 cm. 291 sec. 



,,=3-422xl0- 9 x?^ x /: 155 ^ 

 14-04 x V6-07/ 



e6 =3422xl0- 9 x?^ x /^?^ 



1464 x \2-91/ 



= 9-742xl0~ 10 .\ c = 4-87xl(r 10 . 



=28-16 x 10 -10 .'. £=4-69 X 10~ 10 . 



1 



