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카페 게시글
★ ··· 하프타임
아인슈타인도 발견 못할 거라 말했던 현상
다음검색
첫댓글 판수로 밀어붙혀!!
이젠 고등학교 교과서에까지 실리고 있죠
빛은 사방으로 퍼지는데 딱 4방향에서만 굴절된 빛이 보이는 이유는 뭔가여??