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:
“Half a league, half a league,
Half a league onward,
All in the valley of Death
Rode the six hundred.
“Forward the Light Brigade!”
—Alfred Tennyson (1809–1892)
“The pursuit of perfection, then, is the pursuit of sweetness and light.... He who works for sweetness and light united, works to make reason and the will of God prevail.”
—Matthew Arnold (1822–1888)
“Let the light be called Day so that men may grow corn or take busses.”
—Anne Sexton (1928–1974)