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Umbra refers to the region of complete shadow that results from the total obstruction of light. An example of umbra in a sentence "In the umbra, the tunnel, when the mind went womb tomb."

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How do the umbra and penumbra relate to eclipse?

The umbra is the darker total shadow; the penumbra is the surrounding partial shadow.


What would happen if you stand in the penumbra?

In the penumbra, you would experience a partial eclipse of the Sun or Moon. The sunlight or moonlight would be partially blocked, resulting in a dimming effect but not complete darkness like in the umbra. It's still safe to observe the eclipse in the penumbra without eye protection.


What are the terms of umbra and penumbra and how do they relate to eclipses?

Shadows have two parts, the umbra and the penumbra. The umbra is the darker part of the shadow, in which all of the light from the source is blocked by the object casting the shadow. The penumbra, also known as the half-shadow, is the grayish part along the edge of a shadow in which only some of the light from the source is blocked.During a solar eclipse, if you are within the umbra of the moon's shadow, you are witnessing a total eclipse, and if you are within the penumbra of the moon's shadow, you are witnessing a partial eclipse.


What part of the moons shadow are you in if you see a total solar eclipse?

You will see a partial eclipse if you are in the penumbra.


When is the next penumbra lunar eclipse in the US in 2013?

Please note that in a penumbra lunar eclipse there is nothing to see; nothing spectacular. If you look at the Moon, you might not even notice that there is an eclipse going on; it will just get a bit darker (more on one side than on the other). There was a penumbra eclipse on 25 May 2013; there is going to be another one on 18 October 2013.