With both eyes open, bring your fingers together slowly until they touch. First, hold your arms out in front of you with your index fingers pointing toward each other. You can demonstrate the ability to perceive depth with the following exercise. Individuals with low vision or no vision in 1 eye generally have difficulty with depth perception. When viewing a scene with both eyes, the brain overlaps (superimposes) the 2 images to yield a single image that appears to have depth. The closer the object is to your eyes, the greater the difference between the images from the right and left eye. As you open and close your eye, it will appear that your finger is moving. You can demonstrate the different perspective of each eye by holding a finger in front of your nose and viewing it first with 1 eye closed and then the other. The brain is tricked into overlapping the view from each eye to form a composite image that appears 3-D. The right eye must not see what the left eye sees, and the left eye must not see what the right eye sees. The various types of 3-D imaging technologies all rely on providing a different picture for each eye. Our stereovision informs the generation of 3-D images. When we hold a glass of water, we feel a height, a width, and a depth, but how do our eyes sense 3 dimensions? The perception of depth is facilitated by our stereovision because of the distance between them, each of our 2 eyes captures an image from a slightly different angle. We tactilely experience our surroundings in 3 dimensions (3-D). Making red/blue 3-D viewing glasses and sharing 3-D images from NASA’s photo gallery will have your students seeing the earth and solar system in a whole new dimension. Unlocking the mystery of 3-D imaging not only spurs discussion about the greatest 3-D movies, but it also provides opportunity to discuss visual perception, optics, and colors with your students.Ĭhildren and adults alike are drawn to 3-D technology in entertainment, and the same technology can enhance scientific observations. Moviegoers are demanding more from their sensory experience, and 3-D viewing has become popular for many blockbuster movies. Seeing the Solar System in a New Dimension
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