Centimeters and Inches The centimeter 1 is a common unit of length from the metric system. It is equal to 10 millimeters and 0.01 meter. In other words, one meter consists of 100 centimeters.
Penumbra is a partial outer shadow that is lighter than the darker inner shadow umbra (e.g. the area between complete darkness and complete light in an eclipse). It is a friâ¦nge section of half shadow resulting from the partial obstruction of light by an opaque object.
The umbra is the portion of a shadow from within which none of the light source is visible. The penumbra is the portion of a shadow from within which part but not all of the light source is visible. ______________________________. Umbra is the area of total shadow, while penumbra is the area of partial shadow.