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:
“The light is like a spider.
It crawls over the water.
It crawls over the edges of the snow.
It crawls under your eyelids
And spreads its webs there
Its two webs.”
—Wallace Stevens (1879–1955)
“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)
“But misery still delights to trace
Its ‘semblance in another’s case.
No voice divine the storm allay’d,
No light propitious shone;
When, snatch’d from all effectual aid,
We perish’d, each alone:
But I beneath a rougher sea,
And whelm’d in deeper gulphs than he.”
—William Cowper (1731–1800)