Light
A source of light can have many colors mixed and in different amounts (intensities). A rainbow, or prism, sends the different frequencies in different directions, making them individually visible at different angles. A graph of the intensity plotted against the frequency (showing the amount of each color) is the frequency spectrum of the light. When all the visible frequencies are present in equal amounts, the perceived color of the light is white, and the spectrum is a flat line. Therefore, flat-line spectrums in general are often referred to as white, whether they represent light or something else
Read more about this topic: Frequency Spectrum
Famous quotes containing the word light:
“they appear youthful, rare
as the light of a happy eye, live with the grace
of all that in the mind is fleckless, free and
naturally to be desired.”
—William Carlos Williams (1883–1963)
“I think no woman I have had ever gave me so sweet a moment, or at so light a price, as the moment I owe to a newly heard musical phrase.”
—Stendhal [Marie Henri Beyle] (1783–1842)
“A light he was to no one but himself.”
—Robert Frost (1874–1963)