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 idiot, the Indian, the child and unschooled farmer’s boy, stand nearer to the light by which nature is to be read, than the dissector or the antiquary.”
—Ralph Waldo Emerson (1803–1882)
“Making a logging-road in the Maine woods is called “swamping” it, and they who do the work are called “swampers.” I now perceived the fitness of the term. This was the most perfectly swamped of all the roads I ever saw. Nature must have coöperated with art here.”
—Henry David Thoreau (1817–1862)