If you are viewing a hologram and you close one eye, will you still perceive depth? Explain.
When viewing a hologram and closing one eye, you can still perceive depth. This phenomenon is due to a natural process called stereopsis, which is our brain's ability to process visual information from both eyes and create a perception of depth.
To understand how this works, first consider how depth perception occurs with binocular vision (using both eyes). Each eye captures a slightly different image of an object because they are positioned a few inches apart. The brain then combines these two slightly different images to calculate the disparity between them, allowing us to perceive depth.
When one eye is closed, the brain no longer receives input from that eye, but it still has the memory and knowledge of the depth cues it has previously processed. Depth cues include things like relative size, overlapping objects, linear perspective, and shading, among others. With this information, the brain is still able to generate a perception of depth, even with just one eye.
So, when viewing a hologram and closing one eye, your brain can still use those depth cues present in the hologram to create a sense of three-dimensional depth.