d라이브러리
"AS"(으)로 총 298건 검색되었습니다.
- 대기권 밖의 망원경과학동아 l1989년 04호
- thing of all, however, is the possibility of the unforeseen and the unexpected, Every new tool for exploring space has produced real surprises concerning the universe, and we can be sure the Hu ...
- 지진 The Earth Trembles과학동아 l1989년 04호
- think that space projects are a waste of money that could be spent more usefully on "down-to-Earth" problems, we can ask : What can be more down-to-Earth than what I have just described? ...
- 환경오염방지와 자원재활용을 위한 재생처리기술 어느 수준인가과학동아 l1989년 03호
- 있는 것들이 상당수 존재한다. 이중에 대표적인 것은 폐합성수지의 재활용. PE PVC ABS AS EVA수지 등은 1979년에 제정 공포된 ‘합성수지 폐기물 처리사업법’에 따라 한국자원재생공사(1980년 설립)의 지도 아래 수집돼 종말처리되고 있다.여기서 다시 태어난 것들이 짙은 고동색 고무그릇류와 정화조, ... ...
- 인류최초의 발견─불의 사용과학동아 l1989년 03호
- the Earth to be dominated by Homo erectus and its descendants, Homo sapiens. There is just a chance, however, that it was Australopithecus robustus that, before it died out, bequeathed to us th ...
- 최초의 언어과학동아 l1989년 03호
- discussed at a recent conference of historical linguists by Vitaly Schevoroshkia of the University of Michigan, who has been doing research on the subject.It would be a useful endeavor, too, fo ...
- 물이 많아지고 더워진다과학동아 l1989년 02호
- within its own borders is its own business. The loss of the forests will increase the carbon dioxide supply and decrease the oxygen supply for all humanity. This is an example of the glo ...
- 산불의 냉각효과과학동아 l1989년 02호
- be ruled out. In addition to the immediate deaths by the explosive blasts, there would be almost universal starvation as a cold darkness fell across the world.My own feeling is that we f ...
- 우주여행의 방향은?과학동아 l1989년 01호
- voyages to Mars and its satellites can be made. That will be only the start too, for other trips can be made to the asteroids, to the satellites of Jupiter and eventually to all the solar syste ...
- 태양을 스쳐 지나가기과학동아 l1989년 01호
- into the sun itself.Presumably, this happens now and then, and even more frequently for still smaller objects such as those we call meteorites if they struck the Earth. Nevertheless, this dire ...
- 우주 오염과학동아 l1988년 12호
- and certainly stop any project that involves the deliberate destruction of satellites.But that only slows the increase of danger. It doesn't remove it. Ideally, we ought to think up some way of ...
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