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.
A complete area of shadow is called an umbra. It is the darkest part of a shadow where no light reaches.
The penumbra.
A glass object would give the darkest shadow because it is a transparent material that allows very little light to pass through it, resulting in a more defined and darker shadow compared to the other options provided.
A light shadow is called a silhouette. This occurs when an object is illuminated from behind, creating a dark outline against a bright background.
For a monitor, the difference between the brightest white and the darkest black is called the contrast ratio. This ratio indicates the range of luminance levels a screen can display, with higher contrast ratios providing more vibrant and realistic images.
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
A complete area of shadow is called an umbra. It is the darkest part of a shadow where no light reaches.
The penumbra.
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.
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".
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 shadow cast by the moon on Earth during a solar eclipse is called the umbra. This is the central, darkest part of the shadow. Surrounding the umbra is a lighter shadow called the penumbra, where only a partial eclipse is visible.