우주 색은 초록이 아니라 베이지에 가까워
이름 : 손님 번호 : 1569 |
게시일 : 2002/03/11 (월) AM 11:47:52 조회 : 24 |
날짜 : 2002/03/11 |
천문과학자들은 지난 목요일, 우주가 연초록이라는 보고는 오류였다고 말했다. 우주의 실제 색은 베이지 색이었다.
존스 홉킨스 대학교의 박사후 과정에 있는 아이반 발드리는 "우주의 빛이 실제로는
백색에 더욱 가까우며, 크림 색 같다"고 말했다.
발드리와 동대학 천문학과 조교수인 칼 글레이즈부룩은 올 1월 미국천문학회 모임에서 우주의 색이 pale turquoise이라기보다는 연초록에 가깝다는 데이터를 제시했었다.
우주의 시간 경과에 따른 별의 탄생률을 측정하기위해 2십여만개의 은하들을 조사하던 과정에서 우주의 색이 발견되었다. 서로 다른 은하 색들에 숫자 값을 부여하고 그것들을 합산해서 평균을 낸 후, 발드리 등은 우주의 스펙트럼이 녹색이라는 결론에
도달한 바 있다.
그러나 이러한 발견이 있고 나서 곧, 로체스터 공대 소속, 먼셀 색과학 연구소의 마크
페어차일드는 홉킨스 천문학자들이 이용한 컴퓨터 프로그램에는 "화이트 포인트"라고 알려진 특성이 부적절하게 설정되었다고 말했다.
이 화이트 포인트는 여러 가지 조명을 비출 때 인간의 눈에 백색으로 나타나는 지점이다. 홉킨스 대학 천문학자들의 화이트 포인트는, 마치 우주가 적색 네온 빛 밑에서
관찰될 때처럼, 실제보다 더욱 붉은 색을 띠었다.
출처 : Reuters 원문 보기
|
Oops! Astronomers say universe is beige, not green
Friday, March 08, 2002
By Deborah Zabarenko, Reuters
WASHINGTON ? Red-faced astronomers said Thursday they were
mistaken when they reported that the universe is light green. It's
really beige.
"It was more colorful than it should have been, unfortunately," said
Ivan Baldry, a post-doctoral fellow at Johns Hopkins University
who coauthored the scholarly paper that gave the color of all the
light in the universe. "It's much closer to white, really," Baldry
said. "More like cream."
Baldry and Karl Glazebrook, an assistant professor of astronomy
at the university, presented data at a meeting of the American
Astronomical Society in January finding that the color of the
universe was a bit greener than pale turquoise. The notion of
stating a definitive color of all the universe's light was a whimsical
one, destined to be nothing more than a footnote in their final
paper, Baldry said.
Finding the color was a byproduct of an examination of some
200,000 galaxies to determine the rate of star birth as the universe
aged. By giving a numeric value to the colors of the different
galaxies, adding them together and then averaging them, they
came up with their color, which they dubbed cosmic spectrum
green.
But soon after this finding was announced, Mark Fairchild at the
Munsell Color Science Laboratories at the Rochester Institute of
Technology in New York contacted them to say that the computer
program the Hopkins astronomers used inappropriately had set a
feature known as the "white point."
The white point is the point at which light appears white to the
human eye in different kinds of illumination. The Hopkins
astronomers' white point was redder than it should have been, as if
the universe was viewed under red neon light.
"It's our fault for not taking the color science seriously enough,"
Glazebrook said in a statement. "I'm very embarrassed. I don't like
being wrong, but once I found out I was, I knew I had to get the
word out."
The new color of the universe, as viewed from outside the universe
from a dark environment, is very light beige, but Baldry and
Glazebrook do not much care for that term.
In an updated version of their findings, they showed a patch of a
color just slightly darker than a white eggshell. "Good luck if you
can see the difference between this color and white!" they wrote.
"Suggestions for the name are welcome. As long as it is not
'beige'!''