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:
“But speak the truth, and all nature and all spirits help you with unexpected furtherance. Speak the truth, and all things alive or brute are vouchers, and the very roots of the grass underground there do seem to stir and move to bear you witness.”
—Ralph Waldo Emerson (1803–1882)
“Good nature and good sense must ever join;
To err is human, to forgive divine.”
—Alexander Pope (1688–1744)