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:
“... if a person is to be unconventional, he must be amusing or he is intolerable: for, in the nature of the case, he guarantees you nothing but amusement. He does not guarantee you any of the little amenities by which society has assured itself that, if it must go to sleep, it will at least sleep in a comfortable chair.”
—Katharine Fullerton Gerould (1879–1944)
“What art can paint or gild any object in afterlife with the glow which Nature gives to the first baubles of childhood. St. Peter’s cannot have the magical power over us that the red and gold covers of our first picture-book possessed. How the imagination cleaves to the warm glories of that tinsel even now! What entertainments make every day bright and short for the fine freshman!”
—Ralph Waldo Emerson (1803–1882)