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:
“Libraries are reservoirs of strength, grace and wit, reminders of order, calm and continuity, lakes of mental energy, neither warm nor cold, light nor dark. The pleasure they give is steady, unorgastic, reliable, deep and long-lasting. In any library in the world, I am at home, unselfconscious, still and absorbed.”
—Germaine Greer (b. 1939)
“Thine eyes shall see the light of distant skies:
Yet, Cole! thy heart shall bear to Europe’s strand
A living image of our own bright land,
Such as upon thy glorious canvas lies;”
—William Cullen Bryant (1794–1878)
“Syncopations are no indication of light or trashy music, and to shy bricks at “hateful ragtime” no longer passes for musical culture.”
—Scott Joplin (1868–1917)