10.3 Flashcards
1
Q
Ray model of light
A
Model representing light as straight lines called rays that show direction in which light travels
2
Q
Transparent
A
Light transmits through absorb and reflect very little light
3
Q
Translucent
A
Transmits some light
4
Q
Opaque
A
Absorb and reflect light do not transmit
5
Q
Umbra
A
The part of the shadow in which all the light rays from the light source re blocked
6
Q
Penumbra
A
Partial shadow from a no point light source
7
Q
Regular reflection
A
The light rays strike a smooth surface and reflect in the same direction parallel. To each other
8
Q
Diffuse reflection
A
Reflect off a rough or uneven surface do not remain parallel but are scattered in many different directions
