electromagnet vs permanent magnet

2:48

2:26

3:05

6:26

6:27

2:43

6:51

5:55

5:28

6:10

4:02

6:10

4:03

3:37

7:19

7:05

2:58

7:24

3:46

کوتاه

7:18

7:04

4:53

3:24

2:30

2:02

6:51

3:38

کوتاه

4:03

2:56

10:01

7:05

10:27

10:27

کوتاه

10:51

4:14

2:46

9:35