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얌체공

얌체공

얌체공(bouncy ball, rubber ball)은 폴리뷰타다이엔을 모양으로 만든 장난감이다. 단단한 표면에 집어던지면 집어던질 때의 힘에 비례하여 되튕긴다.

1965년 캘리포니아의 화공학자인 노먼 스팅레이가 발명했다. 스팅레이는 심심해서 놀다가 자투리 고무조각을 평방인치당 3500 파운드 힘으로 압축했는데, 그 결과 얌체공이 만들어졌다. 그래서 표현상 탱탱볼이라고 한다.

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얌체공
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