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)
Read more about this topic: Si
Famous quotes containing the words mathematics and/or science:
“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
For he, by geometric scale,
Could take the size of pots of ale;
Resolve, by sines and tangents straight,
If bread and butter wanted weight;
And wisely tell what hour o’ th’ day
The clock doth strike, by algebra.”
—Samuel Butler (1612–1680)
“We have to ask ourselves whether medicine is to remain a humanitarian and respected profession or a new but depersonalized science in the service of prolonging life rather than diminishing human suffering.”
—Elisabeth Kübler-Ross (b. 1926)