APAKAH MAKSUD HUBBLE CONSTANT dalam CORSICA?
Undang-undang Hubble
Undang-undang Hubble adalah nama pemerhatian dalam kosmologi fizikal yang: objek yang diamati dalam ruang yang mendalam didapati mempunyai pergeseran Doppler yang dapat ditafsirkan sebagai halaju relatif jauh dari Bumi; dan halaju Doppler-shift-diukur ini, dari pelbagai galaksi yang surut dari bumi, adalah hampir berkadaran dengan jarak mereka dari Bumi untuk galaksi sehingga beberapa ratus megaparsecs pergi. Ini biasanya ditafsirkan sebagai pemerhatian secara langsung dan fizikal mengenai pengembangan jumlah spatial alam semesta yang dapat dilihat. Gerakan objek astronomi semata-mata untuk pengembangan ini dikenali sebagai aliran Hubble. Undang-undang Hubble dianggap sebagai dasar pemerhatian pertama untuk paradigma ruang angkasa yang semakin luas dan hari ini berfungsi sebagai salah satu bukti yang paling sering disebut sebagai menyokong model Big Bang. Walaupun secara meluas dikaitkan dengan Edwin Hubble, undang-undang itu mula-mula diperolehi dari persamaan Relativiti Umum oleh Georges Lemaître dalam artikel 1927 di mana beliau mencadangkan bahawa Universe memperluas dan mencadangkan nilai perkiraan laju pengembangan, yang kini disebut konstan Hubble.
Definisi Hubble constant dalam kamus Corsica
Takrif pemalar Hubble dalam kamus adalah kadar di mana halaju pengembangan alam semesta bergantung pada jarak jauh. Ia kini dianggarkan terletak dalam lingkungan 60-80 km s-1 megaparsec-1 Juga dipanggil: parameter Hubble.
CORSICA BUKU YANG BERKAIT DENGAN «HUBBLE CONSTANT»
Ketahui penggunaan
Hubble constant dalam pilihan bibliografi berikut. Buku yang berkait dengan
Hubble constant dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
Horizons: Exploring the Universe
Use the data in Figure 14-4 to plot a velocity-distance diagram, calculate the
Hubble constant H, and estimate the Hubble time. 2. If a galaxy is 9.0 Mpc away
from Earth and recedes at 510 km/s, what is H? What is the Hubble time? How
old ...
Michael Seeds, Dana Backman,
2011
2
Edwin
Hubble: Mariner of the Nebulae
. This is one of the most impressive scientific biographies of recent years."—Kirkus Review, starred review — "Notable Books for the Year 1995" selection, New York Times Book Review —"Best Books of 1995" selection, Library Journal ...
Gale E. Christianson,
1996
3
An Introduction to Galaxies and Cosmology
The Hubble constant is in many ways the most fundamental of the cosmological
parameters. Of them all, it is the one most easily related to the 'theoretical'
parameters that characterize the FRW models, and the value of H{, plays an
important ...
Mark H. Jones, Robert J. Lambourne,
2004
This classic text, aimed at senior undergraduates and beginning graduate students in physics and astronomy, presents a wide range of astrophysical concepts in sufficient depth to give the reader a quantitative understanding of the subject.
5
Confrontation of Cosmological Theories with Observational Data
A preliminary report is given of recent work with A. Sandage on the Hubble
constant. Through a chain of distance indicators in Sc and Ir galaxies (cepheids,
brightest stars. H n regions, and luminosity classes) the distance scale is carried
...
6
After the Science Wars: Science and the Study of Science
Since the Hubble constant measures the rate of expansion of the universe, these
possibilities show that the Hubble constant need not be a constant. In a universe
in which the expansion is slowing down, for example, the Hubble constant had ...
Keith Ashman, Phillip Barringer,
2005
7
The Physical Universe: An Introduction to Astronomy
The numerical value for Hubble's constant H0 can be obtained from this diagram
as outlined in the text. accurately, the redshift) measurements involve little
controversy. The distance measurements are much more problematical, since
they ...
THE HUBBLE CONSTANT AND THE AGE OF THE UNIVERSE By knowing the
distances and speeds of the galaxies, we can, in principle, work out how much
time has elapsed since the Big Bang. If we assume that the galaxies have been ...
9
Astronomy: A Physical Perspective
As we will see below, the currently accepted value for the Hubble constant is in
the range 50-100 km/s/Mpc. Apart from telling us something interesting about the
universe, Hubble's law is also of great value when determining distances to ...
10
Sign-based Methods in Linear Statistical Models
However, Hubble's evaluations of distances have been reconsidered due to
subsequent developments in astronomy, which led to appreciable reduction of
the Hubble constant (which, however, does not affect the linear relationship itself)
.
M. V. Boldin, Galina I. Simonova, I͡Uriĭ Nikolaevich Ti͡urin,
1997
BARANGAN BERITA YANG TERMASUK TERMA «HUBBLE CONSTANT»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
Hubble constant digunakan dalam konteks perkara berita berikut.
Astronomers Name Galaxy After Cristiano Ronaldo
... at approximately 14 billion years (calculation in accordance with the cosmological model based on the Hubble constant and certain densities ... «Information Nigeria, Jun 15»
Galaxy 13.1 Billion Light-Years Away Is Oldest One Yet
First proposed by Edwin Hubble, the Hubble Constant is the unit of measurement used to describe the expansion of the universe. The cosmos ... «Immortal News, Mei 15»
Hubble Telescope's unlikely journey enables 25 years of space study
Astronomers calculated the rate at which the universe is expanding, dubbed the Hubble constant. • Helped reveal that the Big Bang occurred ... «Minneapolis Star Tribune, Mei 15»
Hubble astronomers say its best work still ahead
... the rate at which the universe is expanding, dubbed the Hubble constant, also named in honour of the astronomer Edwin P. Hubble. «Gulf Times, Apr 15»
The Hubble Space Telescope, our window to the universe, turns 25
The HST was used to refine our measurement of the Hubble constant (the rate of the Universe's expansion), confirm the existence of black ... «ExtremeTech, Apr 15»
Hubble: towards resolving the age of the universe
Accurately measuring the Hubble constant (H0), the initial rate of expansion of the universe, from which one can determine the age of the ... «The Hindu, Apr 15»
How do astronomers know the age of the Universe?
What the Hubble constant tells us is that things that are at a distance of one megaparsec (about 3.1 million light-years) from us are moving ... «Geek Snack, Apr 15»
Astronomy Photo of the Day — NGC 3021
In addition, the supernova in NGC 3021 was also used to refine the measurement of what is known as the Hubble constant. The value of this ... «From Quarks to Quasars, Apr 15»
Gorgeous New Image from Hubble Space Telescope Shows Spiral …
In 2009, this supernova, cataloged as SN 1995al, was used to refine the measurement of what is known as the Hubble constant. The value of ... «Sci-News.com, Mac 15»
Astronomy Photo of the Day: 3/15/15 — NGC 4603
It was also used to measure the Hubble Constant (that is, the rate at which the universe is expanding, and how fast galaxies are receding from ... «From Quarks to Quasars, Mac 15»