The penumbra.
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.
Yes it does change, eventually the further away you go the lighter the shadow gets. And depending on if you move a couple of centimetres off, the shadow might start to contour!
Umbra
True.
If the source is larger than a single point, then there's a region in the center of the shadow where the source is completely blocked and none of it is visible, and another region around the center where only part of the source is blocked and part of it is visible.
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.
The penumbra.
There are two parts to the Earth's shadow. The dark narrower part is the Umbra (from Latin for shadow). The lighter part is called the Penumbra (from Latin, pane umbra - almost a 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 darker total shadow is called the "umbra"; the lighter, partial shadow is called the "penumbra".
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.
Lunar eclipse: Earth makes the shadow; the moon passes through it.Earth's shadow is large enough to darken the shole moon at the same time.Solar eclipse: Moon makes the shadow; earth passes through it.Moon's shadow is not large enough to darken the whole earth at the same time ...it causes only a small dark spot, that moves along the surface as the earth turns.
The darker complete shadow is the "umbra". The lighter partial shadow is the penumbra.
the darkest part of the moon's shadow is called the umbra
That part of the shadow is called the penumbra.
Penumbra. Total shadow is the UMBRA. Partial shadow is the PENUMBRA. These words usually refer to solar/lunar eclipses. However, they can refer elsewhere to shadows.