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:
“Probably nature itself gave man the ability to lie so that in difficult and tense moments he could protect his nest, just as do the vixen and wild duck.”
—Anton Pavlovich Chekhov (1860–1904)
“To eat steak rare ... represents both a nature and a morality.”
—Roland Barthes (1915–1980)