Reflection of light Specular and diffused reflection Smooth

Reflection of light.

Specular and diffused reflection

Smooth or gloss surface. (Mirror, glass or still body of water) Rough or matt surface. (bricks, wood, wall paint or skin)

Specular reflection Diffused reflection

Specular reflection Allows us to see ourselves Diffused reflection Allows us to see everything

How do we represent this is diagrams.

First of all, we do NOT consider the whole building or object all at once.

It’s just far too complex.

We represent one light ray by drawing a single straight line towards the object. Then represent what happens to that one ray at a single point on the object

Block of Wood

Block of Wood

Single light ray Block of Wood

One point of interaction with object. Block of Wood

Block of Wood

Block of Wood All resulting rays begin at same point

Block of Wood Diffused Reflection

Tinted Window

Tinted Window Single light ray.

One point of interaction with object. Tinted Window

Tinted Window

Tinted Window The resulting ray begins at same point.

Tinted Window Specular Reflection

Single light ray.

One point of interaction with object.

The resulting rays begin at the same point.

Specular and Diffused Reflection

Now it is your turn to draw some diffused and specular reflected rays