d라이브러리
"NOT"(으)로 총 257건 검색되었습니다.
- 왜 밤하늘은 어두운가?과학동아 l1991년 06호
- in the universe, but they don't give off light for an infinite length of time.And what light they do give off has not yet had time to fill the universe.Wesson's calculations show that this must ...
- 아인슈타인은 역시 옳았다.과학동아 l1991년 06호
- experiment they could detect. Such effects were not detected, and even though Adelberger worked only with matter and not with antimatter, he nevertheless came to the conclusion that the ...
- 좁혀지는 인간과 침팬지의 사이과학동아 l1991년 05호
- was that the chimpanzee genesequences were closer to those of the human being than they were to the gorilla.This was not accepted easily. This sort of gene sequence technique was tricky and it ...
- 거리 측정과학동아 l1991년 05호
- 20 billion. In fact, recent studies have shown that galaxies exist in such large clumps that even 20 billion years may not offer enough time for those clumps to form.Now, though with a reasonab ...
- 빛의 굴절과학동아 l1991년 04호
- 글랜 랭스톤씨가 지휘하는 미국 국립전파천문대의 천문학팀은 지난 1990년 하늘에서 조그마한 고리모양의 전파를 관측하였다. 이와같은 발견은 두번 ... the mass of the intervening galaxy seems to be between 8 and 16 times the mass of the stars we can see in it. This ...
- 고향 찾아가는 희귀한 말과학동아 l1991년 04호
- the Przewalski horses will be placed in a Mongolian area where ordinary horses are not found and where they will not be permitted to enter. In that way, this different horse may be pres ...
- 허블 망원경이 찍은 대폭풍과학동아 l1991년 03호
- the HST. It had been made such a laughing stock that the general public has not been given a chance to realize it is not a total failure. Its studies of Saturn prove that.Secondly, the g ...
- 배타의 원리과학동아 l1991년 03호
- expect it to. Someone suspect that in the extreme conditions of the sun's center, the exclusion principle might not hold very well and that this might lead to a neutrino shortage.(c) 1991, Los ...
- 줄어드는 삼각주과학동아 l1991년 02호
- has cut down on the amount of silt that reaches the delta. The silt already present is slowly sinking, and since not enough silt is coming in to replace that which is sinking, that means that ...
- 잡아먹히지 않는 신비로운 나비과학동아 l1991년 02호
- the bees.Again, although there are carnivorous plants that trap and digest insects, there are some insects that are not concerned about this because they have developed methods that allow them ...
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