The darkest part of a shadows is called the "umbra", which is actually Latin for "shadow". This is where the light source is completely blocked by the occluding body. The person viewing the umbra experiences a total eclipse.
Umbra. The part where it begins to fade off is called the Penumbra. This is also true of sunspots.
UMBRA the fully shaded inner region of a shadow cast by an opaque object, especially the area on the earth or moon experiencing the total phase of an eclipse.
call maria
The penumbra.
contrast ratio
Umbra
6B is the darkest.
True.
the darkest part of the moon's shadow is called the umbra
The darkest part of the moon is called the Umbra. That is the darkest not the largest.
It is called the Umbra, the 'lighter' part of the shadow is the Pen-umbra
There are two parts of a shadow: the UMBRA and the PENUMBRA. UMBRA is the inner darker part of a shadow. PENUBMRA is the outher lighter layer of a shadow. During a solar eclipse, the area on the planet that witnesses a complete total solar eclipse would be under the moon's shadow's UMBRA. The area that views a partial solar eclipse would be under the PENUMBRAL shadow.
I think you are asking what is the lighter part of the Earth's shadow on the Moon that surrounds the darkest part. The penumbra is this lighter part of the shadow. The darkest part is the umbra.
The darkest part of a shadow is called the "umbra" The lighter part of a shadow is called the "penumbra" An "antumbra" is the area of light which surrounds the object creating a shadow, as in a "ring of fire" eclipse (like the recent one in May, 2012). It can best be seen when the viewer is beyond the focal point of the umbra, but in line with it.
penumbra
The penumbra
The darkest, "total" shadow is called the "umbra", while the partial shadow is called the "penumbra", from the latin prefix "pen" meaning "almost".
The darkest portion of the Moon's shadow during an eclipse is called the umbra.
umbra
"Umbra" is correct. However, another way to look at it is that the darkest part of the Earth's shadow is midnight, for what is night but the shadow of the Earth?