rdonnelly shares
12 years ago
levitating slinky: kottke.org/12/06/holy-le...
DrScientist says
12 years ago
duuuuuuuuude
Redack says
12 years ago
More reasons I love physics
kevbot says
12 years ago
立即下載
saintamour says
12 years ago
that is freaky cool