Rules
There are several general rules that deal with fluorescence. Each of the following rules has exceptions but they are useful guidelines for understanding fluorescence. (These rules do not necessarily apply to Two-photon absorption.)
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Famous quotes containing the word rules:
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—François, Duc De La Rochefoucauld (1613–1680)
“However diligent she may be, however dedicated, no mother can escape the larger influences of culture, biology, fate . . . until we can actually live in a society where mothers and children genuinely matter, ours is an essentially powerless responsibility. Mothers carry out most of the work orders, but most of the rules governing our lives are shaped by outside influences.”
—Mary Kay Blakely (20th century)
“It was one of the rules which above all others made Doctr. Franklin the most amiable man in society, “never to contradict any body.””
—Thomas Jefferson (1743–1826)