15 Questions
What is the term for the simple shadow cast by a point source of light?
Umbra
What is the name of the effect where two penumbras overlap and the shadows appear to attract and merge?
Shadow Blister Effect
What region of a shadow does not receive any direct light from any part of the light source and is the darkest?
Umbra
In which region of a shadow will a viewer see the light source partially blocked by the object casting the shadow?
Penumbra
What happens to the shadows when two penumbras overlap?
They attract and merge
What is the term for the area behind an object with light in front of it, which is occupied by a two-dimensional silhouette?
Antumbra
What happens to the shadows when the outlines of the shadow zones are traced by the rays of light emitted by the outermost regions of the extended light source?
They become darker
In which region of a shadow does a viewer located there directly see any part of the light source?
Penumbra
What is the term for the effect where the shadows of two penumbras overlap and appear to attract and merge?
Shadow blister effect
What region of a shadow receives no direct light from any part of the light source and is the darkest?
Umbra
What is the term for the dark area where light from a light source is blocked by an object?
Umbra
What is the term for the simple shadow cast by a point source of light?
Umbra
In which region of a shadow will a viewer see the light source partially blocked by the object casting the shadow?
Penumbra
What is the name of the effect where two penumbras overlap and the shadows appear to attract and merge?
Blister effect
What region of a shadow does not receive any direct light from any part of the light source and is the darkest?
Umbra
Test your knowledge about shadows and light with this quiz! Learn about the formation of shadows, the differences between point and non-point light sources, and more.
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