hubble constant 中文意思是什麼
hubble constant
解釋
【天文學】哈勃常數〈天文學計量單位，根據哈勃定律計算行星運行速度時使用〉。the Hubble 哈勃太空望遠鏡（＝Hubble Space Telescope）。
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Hubble constant 10 99
哈勃常數10 99 -
Expansion rate hubble constant value ho 71 km sec mpc with only 5 percents margin of error
71公里秒百萬秒差，誤差只有百分之五。 -
For the measured value of the hubble constant, this distance is about 14 billion light - years
由量測到的哈伯常數值來推斷，這個距離大約是140億光年遠。 -
The proportionality constant, h, is known as the hubble constant and quantifies how fast space is stretching ? not just around us but around any observer in the universe
其中的比例常數h ，就是所謂的哈伯常數，它可以把空間向外延伸的快慢予以量化，不只針對我們周遭，也適用於宇宙中所有觀測者的周圍。 -
If we know the value of the hubble s constant, we can determine the distance of a galaxy by means of hubble s law
例如上例中的星系，如果哈勃常數是60的話，它便距離地球150百萬秒差距。 -
This means galaxies further away will move away faster. one could argue that the hubble s constant is the most difficult parameter to measure in astronomy. different astronomers using different methods have found different values of h. it ranges from 50km s mpc to about 100km s mpc, with the most accepted value around 60km s mpc
哈勃常數可能是最難以量度的天文參數，不同的天文學家用不同的方法，得出不同的結果，計算出的數值由50公里秒百萬秒差距至100公里秒百萬秒差距不等，現在最被廣泛接受的數值約為60公里秒百萬秒差距。 -
It was not until 1929 did astronomer edwin p. hubble discovered the red shift of distant galaxies and thereby proved that the universe is expanding in all directions. when einstein heard and fully appreciated these observations, he declared that the inclusion of the cosmological constant was his " biggest blunder "
直至一九二九年，天文學家哈勃通過觀測遙遠星系的紅移情況，證明宇宙正向四方八面不斷地膨脹，這時愛因斯坦才猛然自醒，甚至認為當初所提出的恆穩宇宙的結論是他一生中所犯下最愚笨的錯誤。 -
Haloes in the two accretion phases show systematically different properties, for example, the circular velocity vh increases rapidly with time and approximately equals the inner circular velocity vs in the fast accretion phase, but remain almost constant and less than vs in the slow accretion phase : the inner properties of a halo, such as rs and ms increase rapidly with time in the fast accretion phase but change only slowly in the slow accretion phase : the halo concentration changes slow in the fast accretion phase, but increases rapidly with the hubble expansion in the slow accretion phase. the inner structure and potential well associated with a halo is built up mainly in the fast accretion phase, while a large amount of mass can be accreted in the slow accretion phase without changing significantly the inner properties and the potential well
~ 4 ，其束縛能和具有相同圓周速度的等溫球大致相等; （ s ）在這兩個階段，暗暈的行為特徵迥異（例如，圓周速度均『在快速吸積階段增長迅速且略大於內部圓周速度: 、 ，而在緩慢吸積階段基本恆定甚至降低，且小於、 、 . : 、和呱在快速吸積階段增長迅猛，而在緩慢吸積階段增長滯緩） : （ l ）一個暗暈的內部結構和引力勢阱主要是在早期的快速吸積階段成長起來的，雖然在緩慢增長階段可以吸積大量的質量（超過10倍） ，但這並不顯著地改變其內部特徵和引力勢阱
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