Region of Shadows Flashcards
1
Q
How do shadows form
A
An opaque object will cast a shadow in the presence of a light source
2
Q
lighter outer part of the shadow
A
penumbra
3
Q
darkest and central part of the shadow
A
umbra
4
Q
lighter part of the shadow
A
antiumbra
5
Q
forms where the umbra ends
A
antumbra
6
Q
The Antumbra only exits if what?
A
the light source is bigger than the opaque object
7
Q
When is the shadow bigger?
A
when the background is farther from the object with a fixed distance from the light source
8
Q
When the diameter of the light source is less than the opaque object ~ ??
A
the umbral region is larger than the penumbral region
9
Q
When the diameter of the light source is bigger than the opaque object ~ ??
A
the umbral region is smaller than the penumbral region
