Вогнутое зеркало и солнечные печи
Пучок параллельных лучей света, падающий на вогнутое зеркало, после отражения собирается в фокусе.
5 months ago 00:44:02 1
6 months ago 00:12:41 1
7 months ago 00:09:05 1
7 months ago 00:45:24 1
7 months ago 00:13:11 7
7 months ago 00:43:58 1
7 months ago 00:09:32 13
8 months ago 00:00:31 1
8 months ago 00:16:30 1
9 months ago 00:08:02 1
10 months ago 00:43:57 1
11 months ago 00:26:26 1
12 months ago 00:30:09 2
1 year ago 00:39:01 2
1 year ago 00:23:50 1
1 year ago 00:02:08 1
1 year ago 00:27:52 1
1 year ago 00:46:42 1
1 year ago 00:44:02 2
1 year ago 00:08:23 1
2 years ago 00:02:01 3
2 years ago 00:08:25 1
2 years ago 00:05:59 4
2 years ago 00:21:13 3
