Question

What causes us to perceive objects in three dimensions?%0D%0A%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0AObjects in 3D appear to have width and height, but no depth.%0D%0A%0D%0AObjects in 3D appear to have width and height, but no depth.%0D%0A%0D%0ALight bouncing or reflecting off an object in different ways.%0D%0A%0D%0ALight bouncing or reflecting off an object in different ways.%0D%0A%0D%0AThe curvature of space time relative to objects’ solar mass.%0D%0A%0D%0AThe curvature of space time relative to objects’ solar mass.%0D%0A%0D%0AThe rate of time dilation as we approach objects.

Answer 1

We perceive depth mainly because we have two eyes: each eye gets a slightly different view (binocular disparity), and the brain combines those views (stereopsis) to judge distance. The brain also uses monocular cues (shading, occlusion, perspective, texture gradients, motion parallax and lighting/reflection) to infer three dimensions.

(So it’s not time dilation or spacetime curvature — depth comes from binocular and visual cues, including how light reflects.)