1. Moon Illusion
Is an optical illusion in which the Moon appears larger near the horizon than it does while higher up in the sky and farther away.

2. Height in Plane
*Clouds near the horizon are typically farther away from the viewer, while those high in the sky are closer, giving the impression of a flat, or gently curved, sky surface
in which objects moving towards the horizon always recede away from us.
*Objects closer to the horizon are perceived to be more distant than ones below or above the horizon.

3. Visual Capture
Visual capture refers to our tendency to allow visual images to dominate our perception. For example, when we watch a movie in a theater, we tend to think that the voices we hear come from the moving images on the screen, rather than from the speakers that could be located all around the theater. When watching a ventriloquist act, it also seems as if the voice is coming from the dummy rather than from the ventriloquist, because we see that it is the dummy's mouth that moves.

4. Young-Helmholtz Trichromatic Color Vision
Short-preferring (blue), middle-preferring (green), and long-preferring (red), according to their response to the wavelengths of light striking the retina
Yellow light uses different proportions of red and green

5. Continuity
Continuity is a Gestalt principle of perceptual organization that states people have a tendency to group stimuli into continuous lines and patterns. For example, when you see geese flying south for the winter, they fly in a formation that, to us, looks like a big "V".