what is meaning 9f umbra,penumbra and antumbra
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The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. ... These names are most often used for the shadows cast by celestial bodies, though they are sometimes used to describe levels, such as in sunspots.
Explanation:
The region of complete shadow is called the umbra and the region of diffuse shadow is called the penumbra. These shadows are formed on the Earth during a solar eclipse and From the umbra we see a total eclipse while from the penumbra only a partial eclipse is visible.
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The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object
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