d라이브러리
"made"(으)로 총 127건 검색되었습니다.
- 번개와 생명과학동아 l198809
- some kinds that are not only good, but that play an active role in preserving land life. And recent experiments have made it seem that some acid rain is even more life-giving than we had though ...
- 최고(最古)의 날짐승과학동아 l198808
- t fly, how can all that development come about all at once?The answer would appear to be that developments are indeed made piecemeal, but the value of each development to being with is not nece ...
- 마지막 정리과학동아 l198807
- of the greatest mathematicians over the last 3 1/2 centuries have tackled the problem and retired defeated. They have made use of mathematical techniques unknown to Fermat (unless he invented t ...
- 자리 바뀐 섬과학동아 l198807
- seem impossible to mislay a place but it happens all the time. For instance, the Bible says that Noah's Ark finally made a landfall "upon the mountains of Ararat." Ararat is an ancient kingdom ...
- 성단(星団)이라는 측정자과학동아 l198805
- the same total brightness. William Harris, an astronomer at McMaster University in Hamillton, Canada, has recently made a careful study of the globular clusters in nearby galaxies whose distanc ...
- 감마선의 시사과학동아 l198805
- been detecting X-rays coming from Cygnus X-1, also has been detecting gamma rays. Gamma rays are like X-rays but are made up of tiny waves even shorter than those of X-rays. Gamma rays, therefo ...
- 알기 어려운 쿼크과학동아 l198804
- variety is made up of 12 different leptons and 12 different quarks and all the particles commonly found in nature are made up of some combination of two kinds of lepton and two kinds of ...
- 우주의 비밀을 알려줄 폭발과학동아 l198804
- they have almost no interaction with matter. But there is such a thing as an antineutrino as well. Stars and galaxies made up of matter give off quantities of neutrinos, while antistars and an ...
- 가솔린 바다과학동아 l198802
- the distant settlements should, presumably, be running on nuclear fusion reactors. However, those distant oceans are made up of nitrogen, carbon and hydrogen, three elements that are essential ...
- 나무 달력과학동아 l198801
- ancient structures. The ring pattern in timber taken from old houses can be telling us how long ago the timber (often made of whole logs) was cut down, or at least how old it is, so that a part ...
이전8910111213 다음
