propagation of electromagnetic waves

56:24

57:38

54:49

3:59

19:04

4:36

1:15:25

11:01

2:59

کوتاه

6:38

1:15:10

3:58

10:06

4:43

2:47

6:54

2:12

کوتاه

2:05

13:47

11:36

کوتاه

2:19

40:12

45:59

8:09

32:06

9:42

11:50

43:12

41:20

2:51

12:16

6:03

12:44

4:09

1:15

14:11

3:38