Measurement, Mathematics and Science
- International System of Units (Système international d'unités), the modern international standard version of the metric system
- Signal integrity, electronic circuit tools and techniques that ensure electrical signals are of sufficient quality for proper operation
- Si, the chemical symbol for silicon
- Si(x), the sine integral in mathematics
- Survey of India, an Indian government agency responsible for managing geographical information about India
- Simple Interest (Mathematics)
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Famous quotes containing the words mathematics and/or science:
“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.”
—Willard Van Orman Quine (b. 1908)
“The natural historian is not a fisherman who prays for cloudy days and good luck merely; but as fishing has been styled “a contemplative man’s recreation,” introducing him profitably to woods and water, so the fruit of the naturalist’s observations is not in new genera or species, but in new contemplations still, and science is only a more contemplative man’s recreation.”
—Henry David Thoreau (1817–1862)