Colours of A Soap Film
The iridescent colours of a soap film are caused by interfering of (internally and externally) reflected light waves, a process called thin film interference and are determined by the thickness of the film. This phenomenon is not the same as the origin of rainbow colours (caused by the refraction of internally reflected light), but rather are the same as the phenomenon causing the colours in an oil slick on a wet road.
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Famous quotes containing the words colours of, colours, soap and/or film:
“So different are the colours of life, as we look forward to the future, or backward to the past; and so different the opinions and sentiments which this contrariety of appearance naturally produces, that the conversation of the old and young ends generally with contempt or pity on either side.”
—Samuel Johnson (1709–1784)
“Your wits can’t thicken in that soft moist air, on those white springy roads, in those misty rushes and brown bogs, on those hillsides of granite rocks and magenta heather. You’ve no such colours in the sky, no such lure in the distances, no such sadness in the evenings. Oh the dreaming! the dreaming! the torturing, heart-scalding, never satisfying dreaming, dreaming, dreaming, dreaming!”
—George Bernard Shaw (1856–1950)
“Writing ought either to be the manufacture of stories for which there is a market demand—a business as safe and commendable as making soap or breakfast foods—or it should be an art, which is always a search for something for which there is no market demand, something new and untried, where the values are intrinsic and have nothing to do with standardized values.”
—Willa Cather (1876–1947)
“If you want to tell the untold stories, if you want to give voice to the voiceless, you’ve got to find a language. Which goes for film as well as prose, for documentary as well as autobiography. Use the wrong language, and you’re dumb and blind.”
—Salman Rushdie (b. 1948)