About geissler tube results of 1,871
02:34
06:08
02:20
01:59
01:52
02:44
03:07
03:18
02:22
12:21
11:46
23:42
48:57
07:45
03:30
02:40
02:52
02:16
05:05
02:08
02:28
02:17
03:08
10:34
02:47
03:13
03:19
02:18
01:47
02:48
02:24
02:24
10:15
12:27
10:16
09:54
09:03
09:58
03:00
09:04
07:45
07:49
11:03
02:27
04:32
03:00