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:
“Our bread need not ever be sour or hard to digest. What Nature is to the mind she is also to the body. As she feeds my imagination, she will feed my body; for what she says she means, and is ready to do. She is not simply beautiful to the poet’s eye. Not only the rainbow and sunset are beautiful, but to be fed and clothed, sheltered and warmed aright, are equally beautiful and inspiring. There is not necessarily any gross and ugly fact which may not be eradicated from the life of man.”
—Henry David Thoreau (1817–1862)
““Must we burn Sade?” asks Mme de Beauvoir. Now that you mention it, why not? The world is littered with literature. And Sade teaches us little about human nature which we couldn’t gather from a few minutes of honest introspection.”
—D.J. Enright (b. 1920)