3D magic box is a wonderful toy, touching the objects you see with your hands, but it goes through directly. The scene in front of us is also really magical, which can be said to be a mirage of science. The main structure of the Magic Box consists of two parts. The upper and lower parts are plated with silver to form a reflective parabolic mirror surface. There is a round hole at the top of the upper part. If you place a demonstration object at the bottom of eyeshadow palette, you will see an object placed in the air. You can take it by hand but pass through the object. Principle: The main principle of imaging is similar to that of concave mirror imaging. The inside of the box adopts double parabolic mirror design. When the object is placed in concave mirror groups with the same size on both sides (that is, the center point of the lower concave mirror, that is, the focus position of the upper concave mirror), due to the reflection of light, the light emitted by the object will gather at the same point (focus) when reflecting. Therefore, when the object is placed at the center point of concave mirror below, its object light will reflect and gather to the center point of concave mirror above (the focus point of concave mirror below). When the object light is reflected twice, the image of the object will focus on the hole of the Magic Mirror of the three-dimensional illusion to form a three-dimensional floating real image. After being transmitted to our eyes, it will become a floating real image that can be seen but not touched, the size of the floating real statue of this standing body is slightly larger than that of the real object, but its direction is opposite to that of the original real object. Small accessories can be replaced at will, and different accessories also have incredible effects.<br>Scientists call this magical phenomenon a three-dimensional real image. Product Size: height 6.5cm, diameter 15cm