An area of darkness formed on a surface when an object intercepts the light falling on the surface from a source. In the case of a point source the shadow has a sharply defined outline. If the source has an appreciable size the shadow has two distinct regions; one of full-shadow, called the umbra, the other of half-shadow, called the penumbra.
Shadows.
- distribution
- distributional equity
- distributional weight
- distribution coefficient
- distribution control
- distribution counting sort
- distribution-free test
- distribution function
- distribution of terms
- distribution((probability))
- distribution(Schwartz distribution)
- distribution‐free methods
- distributive
- distributive judgement
- distributive justice
- distributive lattice
- distributive law
- distributive laws
- distributivity
- disturbance
- disturbance term
- disturbed days((geomagnetic))
- disulphide bridge
- disulphur dichloride
- disulphuric(VI) acid