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수학동아 - 폴리매스
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[수학자] 숫자15 이야기
수학동아 2018.12.28 02:59 조회 993
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페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

 

숫자 15는 당구와 각종 퍼즐에서 만날 수 있는 수다. 또한 천문학의 수이기도 하다. 보름은 보름달이 뜨는 음력 15일, 또는 15일이라는 기간을 뜻한다. 또한 태양의 움직임에 따라 기후의 변화를 나타내는 24절기와도 관련이 있다. 지구가 태양을 1년 동안 한 바퀴 360° 회전하는 것을 15°로 나누어 1년을 24절기로 구분한 것이다. 이제부터 숫자 15가 가지고 있는 더욱 신기한 이야기를 찾아 떠나 보자.

태그
#15 #삼각수 #메르센수 #마방진상수 #15퍼즐 #하노이탑
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