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- 블랙홀이 지구에도 있는가?과학동아 l1991년 01호
- bangexploding. If so, they haven't been caught at it. The characteristic production of the appropriate gamma rays has not been spotted.However, just happening to catch one at the moment of expl ...
- 일본의 기술과학동아 l1991년 01호
- Of course, the chief problem is that all such dreams can so easily be turned into nightmares through side effects not properly taken into account. Large projects must be approached cautiously!( ...
- 로봇 곤충들과학동아 l1990년 12호
- and it is not easy for any scientist to come up with an idea about robots that I haven't imagined at one time or another.In a story I wrote in 1974 entitled "That Thou Art Mindful of Hi ...
- 생명체의 분류과학동아 l1990년 12호
- that may weigh up to 150 tons.(Some plants are heavier still but most of a tree is supporting woody tissue that is not truly alive, whereas animals consist almost entirely of living tissue.)In ...
- 도도새 같은 죽음과학동아 l1990년 11호
- injury of extinction.As an example of the interrelationship of species, there is a tree on Mauritius whose seeds will not germinate unless the fruit has first passed through the digestive track ...
- 금이 없다!과학동아 l1990년 11호
- and would pay off far less of the fraction of the national debt than you might suppose.Finally, what counts is not the total amount in the ocean but how thinly spread out it is, and it is very ...
- 슈퍼 다이아몬드과학동아 l1990년 10호
- beaten!Unfortunately, carbon-12 diamonds are even more expensive than diamonds ordinarily are, so they probably will not be used on a large scale. However, there are bound to be small-scale use ...
- 발 달린 고래과학동아 l1990년 10호
- And though 10 million years had passed, it still had hind legs. Not much to be sure, but the bones are there and cannot be mistaken. If they were stretched out in a straight line, they ...
- 보이지 않았던 별과학동아 l1990년 09호
- the appearance of the bright star of 1054.The supernova of 1054 was sufficiently spectacular, however, that it need not have been reported only by astronomers in nations with advanced technolog ...
- 마지막 입자과학동아 l1990년 09호
- Associated with the W — particles mentioned above is the "Higgs particle" about which very little is known. It has not been detected so far. And, of course, there may be other particles that p ...
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