What does umbra, penumbra and antumbra mean?

Definitions for umbra, penumbra and antumbra
um·bra, penum·bra and an·tum·bra

This dictionary definitions page includes all the possible meanings, example usage and translations of the word umbra, penumbra and antumbra.

Wikipedia

  1. Umbra, penumbra and antumbra

    The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast. 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.

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Numerology

  1. Chaldean Numerology

    The numerical value of umbra, penumbra and antumbra in Chaldean Numerology is: 2

  2. Pythagorean Numerology

    The numerical value of umbra, penumbra and antumbra in Pythagorean Numerology is: 2

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"umbra, penumbra and antumbra." Definitions.net. STANDS4 LLC, 2024. Web. 27 Apr. 2024. <https://www.definitions.net/definition/umbra%2C+penumbra+and+antumbra>.

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