The crossword puzzle clue today is "They have umbras and penumbras". To solve this puzzle clue, we look for the similarity crossword puzzle definitions for our clue. Below are the possibilities crossword solution and answer for "They have umbras and penumbras".
They have umbras and penumbras :
Sunspots are temporary dark spots seen on our sun, the sites of intense magnetic activity accompanying a drop in surface temperature (hence the darkening in color).
A shadow usually has three distinct parts called the umbra, penumbra and antumbra, with the terms most often used with reference to the shadows cast by celestial bodies. The terms can also be used to describe the levels of darkness in sunspots. The umbra (Latin for “shadow”) is the innermost, darkest part of a shadow. The penumbra (“almost shadow”, from Latin) is a lighter part of a shadow, where part of the light source “leaks” around the body casting the shadow. The antumbra phenomenon is experienced when the object casting the shadow is sufficiently far away from the viewer so that it appears smaller than the light source, with an annular ring around it. When the eye is in the shadow cast by an object that has light passing around it, the eye is in the antumbra.
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They have umbras and penumbras |