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.
A penumbral eclipse of the Moon occurs when the Moon moves into the penumbra created by the Earthâs shadow. The penumbra is a very weak shadow (unlike the umbra, which is the darkest part of the shadow) and the Moon does not dim perceptibly when in moves into the penumbra as seen by the human eye.