Relative Clarity

Relative clarity is when we perceive things in focus, or clearer, to be closer to us while foggy or hazy objects seem to be farther. In this example, a pencil is in focus so it seems to be closer to us while the background is foggy and out of focus so it seems to be farther away.

Relative Size

Relative size is when we perceive things further or closer away due to their size. In this example, the smaller stick figure seems to be farther away because it is smaller than the bigger figure which seems to be closer to us.

Relative Height

Relative height is how we perceive how close objects are because of their height

relative to other objects. In this example, the stick figure that is higher is perceived as farther away while the lower stick figure is perceived closer to us.

Reversible Figures

Reversible Figures is when one object can have two or more perspectives. For example, in this staircase it may seem like you can walk up it, however if you focus on the top left and image it being closer to you, the staircase will flip upside down.

Phi Phenomenon

The Phe Phenomenon occurs when there are multiple still ights that blink in certain patters so it creats the illusion of movement. In this example, the LCD in this clock is turning off and on lights so it appears that the number are moving and changing.

Perception of Movement (Stroboscopic Motion)

Stroboscopic motion is when multiple images are flashed quickly after each other so that it gives the illusion of motion. In this example, there is a ball in different positions on separate individual sticky notes. When flashed quickly one after another, it gives the illusion that the ball is moving.

Figure-Ground Perception

In figure-ground perception there are usually two figures that you can see in reverse of each other. While you may see a figure one way, the background may appear to be another figure. In this famous example, you may see two faces staring at each other, or a vase. Each are two different figures that use each other to make up their figures.