Researchers use ultrasonic waves to keep a tiny LED floating in mid air while powering it wirelessly through induction. Stuart McDill reports.
02:46
01:40
03:10
01:55
01:08
00:49
02:14
02:05
01:27
01:04
01:54
01:22
02:12
02:45
01:19
00:57
00:59
00:29
00:17
00:59
03:03
02:08
01:04
01:29
01:22
02:51
01:22
01:23
01:59
01:03
02:02
02:00
02:56
02:01
02:25
00:48
00:57
00:57
01:06
01:25
01:08
00:49
00:57
00:59
00:29
00:53
00:48
01:47
00:36
00:19
00:45
01:03
01:40
00:51
01:00
00:56
01:04
01:00
01:50
01:16
01:11
02:46
01:40
03:10
01:55
01:29
05:13
02:52
11:01
03:31
02:14
01:07
02:45
05:35
15:53
01:06
01:28
06:18
03:40
02:55
01:45
01:31
00:34
01:01
01:07
00:47
01:40
00:50
01:51
01:49
01:00
01:01
01:05
01:04
00:50
01:27
02:18
01:48
00:51
00:51