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.
Within the umbra, there is no direct solar radiation. However, as a result of the Sun's large angular size, solar illumination is only partially blocked in the outer portion of the Earth's shadow, which is given the name penumbra. A penumbral eclipse occurs when the moon passes through the Earth's penumbra.