Enojezični primeri (nepregledani od uredništva PONS)
angleščina
An alternative definition is that the penumbra is the region where "some or all" of the light source is obscured (i.e., the umbra is a subset of the penumbra).
There are three distinct parts of a shadow created by any non-point light source after impinging on an opaque object called the umbra, penumbra and antumbra.