The darkest central part of a shadow, away from reflected light.
ShadowAstronomyOpticsPhysics
Current best complexity is 6:
Umbra can be discovered in Concepts, categorized under Shadow, Astronomy, Optics, Physics. The darkest central part of a shadow, away from reflected light.
It has been discovered by 31 boards and crafted 74 times, first appearing 8 months ago. Umbra can be created from 48 recipes, and goes on to appear as an ingredient in 68 others.
Umbra was first discovered by Rafael's board 8 months ago. The lowest-complexity recipe (6) is held by ๐ง๐ท Muril2k10's Board ๐ง๐ท.
Related concepts worth exploring include Steam, Vapor, Planet, Sunset, Explosion, Neptune, and 6 more.