These are some of my views on ⒊ graphs Bird's eye view 1 : 1 2 {@} Left {@} Right figure 2 : The one who sees with the left eye... the one who sees with the right eye... * * Crazy customs have made it possible for us to see the front and a little bit of the left side of an object at the same time, allowing us to have A three-dimensional perception of an object. Now if the left eye's field of view is drawn on the left and the right eye's field of view is drawn on the right, then when the ratio of the two pictures is consistent with the human eye staring into the distance, size, you look left with your left eye; look right with your right eye, and the focus of both eyes is on this ⒉ far behind the figure, you will see ⒊ illusion.. ....Now let's practice * * * * * * * * * * There is an episode of Newton Magazine that has some ⒉ ⒊ pictures of ancient buildings. I forgot which episode it was. I heard there is a special book on it... I wonder who knows I heard that there is already a dual-lens camera with this principle in the United States.