latest moon eclipse was extremely dark. Earth's atmosphere presently contains much more dust, due to the eruption of Mount Pinatubo in the Philippines in 1991. The eclipse also occurred when the moon was low in the sky, so it was seen through the thickest part of the atmosphere.When the eclipse began over Manhattan, the shadow of the Earth seemed to eat away the moon, leaving nothing behind, ...
Dutch word for channel. Some day the city barges will be turned away from Staten Island, unless we really want another Mount Everest looming beside the Verrazano narrows.Landfills are problematical. They aren't decomposing into nice soil overnight. Many plastics and metals stay put almost forever, and even paper can take 60 years to degrade(unless it's in a modern book, which seems to turn ...
of heaven in which the field of stars, the wandering planets, the sun and moon all moved around the Earth, but the Mount Wilson telescope irrevocably changed humanity's idea of the universe. Soon, other "nebulosities" besides Andromeda were shown to be far-off galaxies. Our Milky Way galaxy was not alone, and suddenly the universe was much bigger than anyone thought.Technology goes on ...
시야가 좁은 검은 하늘을 배경으로 희미한 별을 오랫동안 시야에 넣어야 하므로 마운트(mount, 架臺)가 필요하며, 마운팅의 성능이 망원경의 성능을 크게 좌우한다. 가대는 크게 경위대식과 적도의식으로 나뉜다(그림 1).■경위대식경통이 수평과 수직의 두 방향으로 움직이도록 되어 있는 장치로 ...
and other nations are continuing to launch object into sapace. Explosions and collisions contiune to take place. The amount of debris continues to mount, so that some people estimate that the number of pieces in space will quadruple every 10 years.This means that it is quite possible that by the year 2000, we can expect that any working satellite in ańy given year has one chance in 200 of ...
still are. What we don't know is which particular mountain the Bible may have referred to. There is a mountain we call Mount Ararat, but that's just a guess, even though people sometimes look for the Ark there.Then there's the city of Troy, destroyed by the Greeeks after a famous 10-year siege. It was somewhere in the northwestern tip of Asia Minor, but for many centuries people wondered ...
제작한바 있는데 올해는 고도의 정밀을 요구하는 반도체 자동삽입 설비인 칩마운트(Chip Mount) 등을 개발, 제품의 품질향상 및 제조원가의 절감으로 국제경쟁력을 강화해 나갈 예정이다 ...