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.
Umbra and Penumbra. Because the Sun appears as a disk ~1/2Â° across, Sun shadows are fuzzy rather than sharp. This means shadows cast by the Earth & Moon are two-part shadows: (Click on the image to view at full scale [Size: 10Kb])