What does 7d glass bridge mean?

The so-called 7D means that you will see holographic images on the glass bridge, 5d = 4d+ dynamic special effects. 6d = 5d+ dynamic participation. 7d = 6d+ dynamic music.

3D is the abbreviation of "3Dimensions" in English, and Chinese refers to three dimensions, three dimensions and three coordinates, namely, length, width and height. In other words, it is three-dimensional, and 3D is the concept of space, that is, the space composed of three axes of X, Y and Z is relative to a plane (2D) with only length and width.

To put it simply, the space we usually live in is three-dimensional 3D. Our world is also called the 3D world. 4D has two different expressions. The first category refers to 4D movies. It is a movie with real experiences such as smoke, rain, photoelectricity, bubbles and smells.

For example, watching a 4D movie, there is a waterfall in the movie plot, and you will feel that there is really water spraying at you. The so-called 4D is based on Einstein's theory that the concept of time is added to 3D, and the combination of time and space becomes 4D space. Then the 4D of the glass bridge refers to the first concept, just like the 4D movie.

Extended data

Holography

The photography method invented by dennis gabor can print photos from multiple angles, but there is an angle limit. Many anti-counterfeiting signs are made of holographic images.

Holographic projection can also be regarded as a generalized holographic image, but the so-called holographic picture is only projected on a transparent "holographic plate". Therefore, the so-called holographic image is just a plane rather than a three-dimensional image. This is the most widely used holographic technology at present.

Holographic image

Holographic imaging technology, which is still under study, often appears in science fiction works. In order to create a physically pure three-dimensional image, the audience can observe and even enter the image from different angles without restriction.

Baidu encyclopedia-holographic image