https://padlet.com/fktan/Bookmarks Share everything regarding physics here. en-us 2022-02-17 02:07:26 UTC 2023-08-03 13:23:23 UTC hello@padlet.com https://padlet.net/icons/png/1f923.png fktan https://padlet.com/fktan/Bookmarks/wish/2055320410 我拍到泳池的水面上有反射和折射的现象。]]> 2022-02-18 14:20:49 UTC https://padlet.com/fktan/Bookmarks/wish/2055320410