Give examples of how an interior designer might benefit from a knowledge of diffuse reflection.Choose an example of direct and indirect light in your home. Briefly summarize their effectiveness.?

Say, put a window at points A and B.

Then, place a mirror at point C so that the light from window A reflects against another wall, making the room even brighter.

Place a shiny vase in corner D to reflect point B's light off a little to further brighten the room.

Using these, you can lighten up a room using minimal Windows, (where Windows may be a safety risk or may be difficult to install). Placing both the Windows and furniture or main features may allow you to brighten a room, and also, placing a TV cabinet in the 'reflection zone' of these things will be annoying for the occupant. Also, the lighter you can get a room, within reason, the more you can save on electricity. Also, the brighter the room, the more 'cheerful' it seems.