In Nature
Most interstellar hydrogen is in the form of atomic hydrogen because the atoms can seldom collide and combine. They are the source of the important 21 cm hydrogen line in astronomy at 1420 MHz.
Read more about this topic: Nascent Hydrogen
Famous quotes containing the word nature:
“A man who lives with nature is used to violence and is companionable with death. There is more violence in an English hedgerow than in the meanest streets of a great city.”
—P.D. (Phyllis Dorothy)
“It is the nature of our desires to be boundless, and many live only to gratify them. But for this purpose the first object is, not so much to establish an equality of fortune, as to prevent those who are of a good disposition from desiring more than their own, and those who are of a bad one from being able to acquire it; and this may be done if they are kept in an inferior station, and not exposed to injustice.”
—Aristotle (384–322 B.C.)