ted-ed
Why doesn’t the Leaning Tower of Pisa fall over? - Alex Gendler
just one
2022. 11. 10. 11:50
Why doesn’t the Leaning Tower of Pisa fall over? - Alex Gendler
https://www.youtube.com/watch?v=HFqf6aKdOC0&list=PLJicmE8fK0EinZZ6hY-RzJr8kcgIERWEc