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:
“Of all the things that oppress me, this sense of the evil working of nature herself—my disgust at her barbarity—clumsiness—darkness—bitter mockery of herself—is the most desolating.”
—John Ruskin (1819–F1900)
“Theories that go counter to the facts of human nature are foredoomed.”
—Edith Hamilton (1867–1963)