Zhihu, can you see it at the holographic projection site in Tianyi Luo?

Tianyi Luo holographic projection website can see it?

Conclusion: I can see that.

Principle: Orthographic holographic display is a kind of 3D technology, which originally refers to the technology of recording and reproducing real 3D images of objects by using the interference principle. Then, under the guidance of science fiction movies and commercial propaganda, the concept of holographic projection gradually extended to commercial activities such as stage performances and exhibitions. However, the holographic technology that we usually know is not holographic projection in the strict sense, but a holographic projection technology that uses pepper illusion and edge blanking to achieve 3D effect.

"Holography" comes from the Greek word "Holo", which means "complete information", that is, it contains amplitude and phase information in light waves. Ordinary photography can only record the intensity information (amplitude) of light, and the depth information (phase) will be lost. In the interference process of holographic technology, the superposition of peaks will be higher, and the superposition of peaks and valleys will be flattened, resulting in a series of irregular stripes alternating between light and dark, thus converting phase information into intensity information and recording it on photosensitive materials.