Penumbra

The shadow cast when the incident radiation is partly, but not wholly cut off by an intervening body; the space of partial illumination between the umbra, or perfect shadow or all side and the full light. A marginal region on borderland or partial obscurity.
Accreditations Aster Accredia Accredia Accredia Tuv Nord Nadcap Crit
Sigla.com - Internet Partner