인터액티브 수학퍼즐
과학동아 1997년 05호
two hour glasses - one for 7 minutes, another for 11. How should he go about preparing his breakfast? How many times will he have to turn hour glasses? What would be the minimal required number of glass turns ...
two hour glasses - one for 7 minutes, another for 11. How should he go about preparing his breakfast? How many times will he have to turn hour glasses? What would be the minimal required number of glass turns ...
likely a tornado before you'll see it.More on the Tornadoes section.Try to get some sleep.This may sound crazy,but if all that's happening is that you're getting wind and rain,now is the time for you to catch a nap.Adults in the house should sleep in shifts,so someone is always monitoring the storm and the local conditions.You'll need some rest,in case you do have to evacuate,and certainly ...
정확하게 24시간의 광주기에 동조하여 반복된다. 그러나 이들을 연속DD(암흑) 또는 연속LL(조명)의 조건에 두면 매일의 주기성을 나타내지만 개체고유의 시간에 의한 리듬이 나타난다.우리들 주변에서 흔히 볼 수 있는 바퀴벌레의 48일간에 걸친 활동리듬을 조사해보았다. 제 1일째부터 제 27일째까지 ...
s Gonna Change My Love for You, Top of the World 등이 수록되어 있으며, 2편에는 보디가드 주제가(I'll Alwaya Love You)와 로빈훗 주제가(I Do I Do For You) 등이 수록되어 있다.시사영어사가 최근 선보인 '영어는 즐겁게 '(English The Happy Way)는 종이책, 테이프, 영상매체의 특징에다 PC의 상호대화형(인터렉티브) 속성까지 ...
93년도에 분리 운영됨으로써 사용자들에게 무척 불편함을 주었던 피시서브와 천리안 ll가 서비스를 합치면서 본격적인 종합 정보 서비스로 자리를 잡았다.무료로 운영되던 한경의 케텔 서비스도 92년 말에 한국통신의 본격적인 참여로 한국PC통신주식회사가 설립돼 몇 차례 이름을 바꾸는 진통을 ...
seem drawn to living outside their own lives, at least temporarily - like paleolithic people mesmerized by a story-teller, or modern people reading books, going to the movies, watching TV. And some lucky people — many of them writers — get VR for nothing, for they can experience as real the sights, sounds and emotions in a story they're imagining.The trick is to keep track of what's in the ...
buffs. Some day humans won't have to burn rocket fuel to get off Earth and keep going. Maybe we'll soon be using fullerenes, for right now they're being studied for the development of accelerated ion beams to propel spaceships!(c) 1992, Los Angeles Times ...
칼럼이(한명의 필자가 아닌) 공동으로 노력으로 쓰여질 때 일인칭 복수를 이해하기 힘든 문제가 있다. '우리'란 필자들인 아이작 아시모프와 자넷 아시 ... eye of the beholder, but in the way the eyes are used and augmented by equipment. Perhaps the most amazing beauty of all is the effect of this far-out universe on the human mind ...
can be stepped on, many poisoned, but the clan is all too likely to outlast the human one. In science fiction, intelligent computers outlast humans, too.Cheer up. Unlike cockroaches, microchips don't know how to reproduce by themselves. Yet.(c) 1992, Los Angeles Times ...
theory, the universe itself may be left-handed. From the skew of nuclear particles to the amino acids in living cells to the way galaxies rotate, there is definitely a left-handed bias in the universe. Now they're working on way. I can hardly wait.(c) 1992, Los Angeles Times ...