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:
“God, for wise reasons, has made our affairs in this world, almost as fickle and capricious as ourselves.—Pain and pleasure, like light and darkness, succeed each other; and he that knows how to accommodate himself to their periodical returns, and can wisely extract the good from the evil,—knows only how to live.”
—Laurence Sterne (1713–1768)
“No one after lighting a lamp puts it under the bushel basket, but on the lampstand, and it gives light to all in the house. In the same way, let your light shine before others, so that they may see your good works and give glory to your Father in heaven.”
—Bible: New Testament, Matthew 5:15,16.
“Mysterious Night! when our first parent knew
Thee from report divine, and heard thy name,
Did he not tremble for this lovely frame,
This glorious canopy of light and blue?”
—Joseph Blanco White (1775–1841)