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:
“Socrates ... brought human wisdom back down from heaven, where she was wasting her time, and restored her to man.... It is impossible to go back further and lower. He did a great favor to human nature by showing how much it can do by itself.”
—Michel de Montaigne (1533–1592)
“As I sat before the fire on my fir-twig seat, without walls above or around me, I remembered how far on every hand that wilderness stretched, before you came to cleared or cultivated fields, and wondered if any bear or moose was watching the light of my fire; for Nature looked sternly upon me on account of the murder of the moose.”
—Henry David Thoreau (1817–1862)