Penumbra, the part outside the Umbra. In the Penumbra you see the sun with a bite taken out of it, but you still get daylight.
Penumbra
The outer blurred edges of a shadow are called the penumbra. This region is where the shadow transitions from complete darkness to partial darkness, resulting in a softer edge.
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 outer portion of the shadow cast on Earth by the Moon is called the penumbra. It is a region where only a portion of the light source is obscured, resulting in a partial shadow.
That part of the shadow is called the penumbra.
The umbra in a shadow is the portion where light from a source is completely blocked. This is in the middle of the shadow. The area around this, where light from part, but not all of the source shines is called the penumbra. In the shadow cast by the moon in an eclipse, the penumbra is the partial shadow that occurs before the total eclipse, and the umbra is the 'total eclipse' portion
The penumbra.
The penumbra.
Umbra is latin for shadow. It's often used for the central part of the shadow of the moon during an eclipse. The outer part of the shadow, or penumbra, still receives some light.
A solar eclipse happens when the Moon casts two shadows on Earth: the umbra, which is the darkest part of the Moon's shadow, and the penumbra, which is the lighter part. The umbra creates a total eclipse where the Sun is completely blocked, while the penumbra creates a partial eclipse where only part of the Sun is blocked.
penumbra