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:
“Come hither, and I shall light a candle of understanding in thine heart, which shall not be put out.”
—Apocrypha. 2 Esdras, 14:25.
“...care and labor are as much correlated to human existence as shadow is to light ...”
—Harriet Beecher Stowe (1811–1896)
“So doth, so is Religion; and this blind-
ness too much light breeds; but unmoved thou
Of force must one, and forc’d but one allow;
And the right; ask thy father which is she,
let him ask his; though truth and falsehood be
Near twins, yet truth a little elder is;”
—John Donne (1572–1631)