physics demos for high school

11:21

کوتاه

1:07:13

4:13

3:22

5:18

7:26

7:26

کوتاه

6:41

1:38

2:45

11:59

3:16

1:25

2:14

1:23:08

8:37

4:00

6:32

4:12

1:12:41

10:34

23:32

2:00

23:48

8:00

22:47

23:22

23:38

کوتاه

4:29

3:49

23:06

3:52

3:22

23:38

کوتاه

6:00

2:45