In physics and optics, the Fraunhofer lines are a set of spectral lines named after the German physicist Joseph von Fraunhofer (1787–1826). The lines were originally observed as dark features (absorption lines) in the optical spectrum of the Sun.
Famous quotes containing the word lines:
“I struck the board, and cried, ‘No more,
I will abroad!
What? shall I ever sigh and pine?
My lines and life are free, free as the road,
Loose as the wind, as large as store.
Shall I be still in suit?”
—George Herbert (1593–1633)