수학자들이 엄선한 신발끈 묶는 방법!
Veritasium 한국어 - 베리타시움 · 33:06
Knot theory grew out of a failed 19th-century idea that atoms were knotted vortices, and it turned into a working branch of mathematics with uses in DNA biology, antibiotics, cancer drugs, chemistry and even untanglin...