science experiment liquid nitrogen vs lock

6:36

6:30

6:29

4:55

4:54

5:20

4:54

8:01

4:55

6:45

10:04

3:09

10:09

10:35

10:09

10:09

10:01

10:30

5:03

5:02

3:19

3:18

2:59

2:26

7:09

کوتاه

3:38

7:19

8:22

5:33

11:28

11:28

11:29

3:37

3:37

5:06

2:12

10:01

21:33

21:33