%EC%A0%9C%EC%A3%BC%EB%8F%84%EB%A3%B8%E2%97%91%E0%B4%A01%E0%B4%A0%E2%86%947513%E2%86%94%C3%953%C3%954%E2%97%91%E3%92%AA%EC%A0%9C%EC%A3%BC%EB%8F%84%EB%A3%B8%EC%82%B4%EB%A1%B1%E5%9A%B5%EC%A0%9C%EC%A3%BC%EB%8F%84%EB%A3%B8%EC%88%A0%EC%A7%91%E6%8F%AA%EC%A0%9C%EC%A3%BC%EB%8F%84%EB%A3%B8%EC%8B%B8%EB%A1%B1%E9%98%9C%EC%A0%9C%EC%A3%BC%EB%8F%84%EB%A3%B8%EC%8C%80%EB%A1%B1%F0%9F%91%A8%E2%80%8D%F0%9F%92%BCmagneticfield/