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 mob is a society of bodies voluntarily bereaving themselves of reason, and traversing its work. The mob is man voluntarily descending to the nature of the beast.”
—Ralph Waldo Emerson (1803–1882)
“For as the eyes of bats are to the blaze of day, so is the reason in our soul to the things which are by nature most evident of all.”
—Aristotle (384–322 B.C.)