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:
“The wildest dreams of wild men, even, are not the less true, though they may not recommend themselves to the sense which is most common among Englishmen and Americans to-day. It is not every truth that recommends itself to the common sense. Nature has a place for the wild clematis as well as for the cabbage. Some expressions of truth are reminiscent,—others merely sensible, as the phrase is,—others prophetic.”
—Henry David Thoreau (1817–1862)
“If I wished to see a mountain or other scenery under the most favorable auspices, I would go to it in foul weather, so as to be there when it cleared up; we are then in the most suitable mood, and nature is most fresh and inspiring. There is no serenity so fair as that which is just established in a tearful eye.”
—Henry David Thoreau (1817–1862)