Anti-Gravity Mirror

At first, we were very curious what a single mirror does in that science fair. We observed for a few minutes until a guy came up to us and explained what the mirror is for. He stood on the right side of the mirror and aligned his nose to the mirror’s edge. He positioned himself within the 45-degree angle with the mirror. We watched him as he lifted his leg and moved his left arm up and down. As he did that movement, he appeared to be flying. Did you know why?
The human body exhibits bilateral symmetry. This means that only one plane, called the sagittal plane, divides the body into roughly mirror image halves (external appearance only). The two halves can be referred to as the right and left halves. The right half is similar to the left half in size, shape and parts.