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:
“She would rather light a candle than curse the darkness, and her glow has warmed the world.”
—Adlai Stevenson (1900–1965)
“A lover may bestride the gossamers
That idles in the wanton summer air,
And yet not fall; so light is vanity.”
—William Shakespeare (1564–1616)
“To light one candle to God and another to the Devil is the principle of wisdom.”
—José Bergamín (1895–1983)