camp be military, political or economic. Information is transmitted in secret by using a "semichaotic" system (don't ask me to explain that for I don't even understand the chaos theory).And finally, Northwestern University researchers discovered that the sound wave map of a primate warning cry is similar to a sound that especially bothers humans - the screech of metal or fingernails being ...
particles, mostly quarks and the particles("gluons") that hold them together.This is the "cosmic soup", and you might ask what do astronomers know about this soup. The answer is, "Nothing much."How do they go about finding more? One way is to start with the universe as it is today(and we know quite a bit about that) and then work out way backward, trying to figure out what happens with each ...
be located in various sites of the Soviet Union, giving us a larger area for collecting signals.Of course, one has to ask, What use would it be to detect alien life? There is virtually no chance that we will understand what they are saying, or that we can answer intelligently.(Some people say we must not answer under any circumstances lest the aliens decide they like our planet and come here ...
charges have been reported, but none of these has been confirmed.So the "hunting of the quark" continues.We might ask ourselves-if we never really detect quarks, how do we know they really exist?By inference. Beginning in 1808, scientists accepted the existence of atoms before they actually had good evidence of them in 1913.So many aspects of nuclear physics are explained by supposing that ...
are able to determine that its real diameter is 1.37 light-years (nearly 8 trillion miles.) Now astronomers had to ask the question: How far must the ring be so that a real diameter of 1.37 light-years appears to us to represent a width of 1.66 seconds of arc?The answer comes out 169,000 light-years, which can now be taken as the distance, on the average, of all the billions of stars in the ...
one has visited the moon now in 17 years. So as we celebrate the 20th anniversary of that first moon landing, we might ask： What was it all for? Did we get anything out of it? Was there really a giant leap?Well, yes； the moon landings gave us a valuable chance to learn about its-and our-far past.The Earth and the moon, and the whole solar system, in fact, came into being about 4.55 billion ...
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?(c) 1989, Los Angeles Times ...
증명하는 것이기도 하다. 해결책 역시 전지구적일 수밖에 없다.Suppose we look back over 1988 and ask what the most important scientific advance of the year may have been.That's not easy to answer if we confine ourselves to actual discoveries, because the inportance of some findings may not be immediately apparent. Back in 1944, a Canadian-American physician, Oswald ...
been able to glide. Anything more than very weak flight would not seem possible for archeopteryx. Naturally, one might ask, what was the pointof feathers if, when they first developed, they did not make flight possile. Surely, it makes no sense to suppose that useless primitive feathers would evolve simply because they might somday be useful.The answer evolutionists make is that even if they ...