Атомы, молекулы и ионы
4 months ago 00:31:14 1
4 months ago 00:08:53 1
4 months ago 00:11:28 1
![Вселенная расширяется, а ты? [Veritasium]](https://sun9-23.userapi.com/PN0GlnTNrvZSnMvsrUvgfXil0OpKIiNoJB7Tjw/WcW52H4sKsk.jpg)
4 months ago 00:10:01 1
4 months ago 00:03:42 1
4 months ago 00:12:43 1
4 months ago 00:49:44 1
4 months ago 00:57:20 1
4 months ago 00:19:04 1
4 months ago 00:24:30 1
4 months ago 00:05:08 1
4 months ago 00:23:28 1
4 months ago 00:05:39 1
4 months ago 00:34:59 1
5 months ago 00:04:02 1
5 months ago 00:09:47 1
5 months ago 00:07:24 8
5 months ago 00:05:34 1
5 months ago 00:06:41 1
5 months ago 00:11:28 1
5 months ago 00:10:12 1
5 months ago 00:09:06 1
5 months ago 00:07:20 2
5 months ago 00:37:41 1
