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 of lesser size. In cases of equal or larger impinging objects, on
Umbra, penumbra and antumbra formed through windows and shutters
Earth's umbra, as seen during a partial lunar eclipse
Solar eclipse
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A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby obscuring the view of the Sun from a small part of Earth, totally or partially. Such an alignment occurs approximately ev
Umbra, penumbra and antumbra
…shadow') is the region from which the occluding body appears entirely within the disc of the light source. An observer in this region experiences an annular eclipse, in which a bright ring is visible around the eclipsing body. If the observer moves closer to the light source, the apparent size of the occluding body…
A total solar eclipse occurs when the Moon completely covers the Sun's disk. Solar prominences can be seen along the limb (in red) as well as extensively the coronal and partly the radiating coronal streamers. (August 11, 1999)
An annular solar eclipse occurs when the Moon is too far away to completely cover the Sun's disk (October 14, 2023).
During a partial solar eclipse, the Moon blocks only part of the Sun's disk (October 25, 2022).
Partial and annular phases of the solar eclipse of May 20, 2012