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:
“Have you ever turned toward an intellectual in a time of authentic anguish and encountered his light appraisal, or evasion, of your grief? Or turned to him in a situation of light import only to be met with a heavy, superfluous solemnity?”
—Margaret Anderson (1886–1973)
“Smokers, male and female, inject and excuse idleness in their lives every time they light a cigarette.”
—Colette [Sidonie Gabrielle Colette] (1873–1954)
“Haply your eye shall light upon some toy
You have desire to purchase.”
—William Shakespeare (1564–1616)