Math and Science
In statistics, the term chi-squared or has various uses, including the chi-squared distribution, the chi-squared test, and chi-squared target models.
In algebraic topology, Chi is used to represent the Euler characteristic of a surface.
In neurology, the optic chiasm is named for the letter Chi because of its Χ-shape.
In chemistry, the mole fraction and electronegativity may be denoted by the lowercase .
In rhetoric, both chiastic structure (a literary device) and the figure of speech Chiasmus derive from their names from the shape of the letter Chi.
In engineering, chi is used as a symbol for the reduction factor of relevant buckling loads in the EN 1993, a European Standard for the design of steel structures.
Read more about this topic: Chi (letter)
Famous quotes containing the word science:
“May we not assure ourselves that whatever woman’s thought and study shall embrace will thereby receive a new inspiration, that she will save science from materialism, and art from a gross realism; that the “eternal womanly shall lead upward and onward”?”
—Louisa Parsons Hopkins, U.S. scientist and author. As quoted in The Fair Women, ch. 16, by Jeanne Madeline Weimann (1981)