Quadrature
With quadrature is called:
- In astronomy, a constellation form a geocentric angle of 90 ° in the heavenly bodies - see quadrature,
- In physics and electrical engineering, a phase shift of a periodic signal by 90 ° - see quadrature amplitude modulation,
- In mathematics to calculate the surface area of a limited range of curves - see squaring of the circle and Numerical quadrature (numerical integration). The term is obsolete, instead, is today the more general concept of integration is usually used.
- In the architecture of a proportion key - see Proportion (architecture).
- Disambiguation