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:
“So vulnerable.
She is already trampled, that one,
having traveled so far from the heart.
She weighs so little.
She is so light and vulnerable.
She is the dead bee called love.”
—Anne Sexton (1928–1974)
“As I drew a still fresher soil about the rows with my hoe, I disturbed the ashes of unchronicled nations who in primeval years lived under these heavens, and their small implements of war and hunting were brought to the light of this modern day.”
—Henry David Thoreau (1817–1862)
“Smokers, male and female, inject and excuse idleness in their lives every time they light a cigarette.”
—Colette [Sidonie Gabrielle Colette] (1873–1954)