Plus, these particles are ionized so they don't absorb the light like the neutral hydrogen gas.
另外,这些粒子被电离, 因此它们不会像中性氢气那样吸收光。
单词 | Neutral hydrogen |
释义 |
Neutral hydrogen
原声例句
Veritasium真理元素 Plus, these particles are ionized so they don't absorb the light like the neutral hydrogen gas. 另外,这些粒子被电离, 因此它们不会像中性氢气那样吸收光。 Veritasium真理元素 Adding all of that neutral hydrogen gas into our baryon budget brings us almost to 50 percent. 将所有这些中性氢气加到我们的重子预算中,使我们几乎达到 50%。
中文百科
21公分线 Hydrogen line(重定向自Neutral hydrogen)
![]() ![]() ![]() ![]() 21厘米线,又被称为氢线,21厘米辐射(hydrogen line, 21 centimeter line or HI line)是指由中性氢原子因为能阶变化而产生的电磁波谱线。频率是1420.40575177 MHz,相当于在太空中波长 21.10611405413 公分。在电磁波谱上的位置是微波。 这个波长的辐射经常在射电天文学上被应用,尤其无线电波可以穿过对可见光是不透明的星际云等巨大星际介质区域。 21公分波来自于1s基态氢原子的两个超精细结构之间。两个超精细结构能阶的能量不同,而量子的频率则是由普朗克关系式决定。
英语百科
Hydrogen line 21公分线(重定向自Neutral hydrogen)
The hydrogen line, 21 centimetre line or HI line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This electromagnetic radiation is at the precise frequency of 1420.405751786 MHz, which is equivalent to the vacuum wavelength of 21.10611405413 cm in free space. This wavelength falls within the microwave radio region of the electromagnetic spectrum, and it is observed frequently in radio astronomy, since those radio waves can penetrate the large clouds of interstellar cosmic dust that are opaque to visible light. |
随便看 |
|
英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。