The Network of Time and Space

The journey of heaven and earth is the reverse of all things; Time flies, passing guests of a hundred generations.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

The gravitational field is one of the most common and mysterious force fields in the universe, which runs through the entire universe, shapes the motion of celestial bodies, forms galaxy structures, and affects the evolution process of the universe. The gravitational field is a force field caused by the mass around an object, which is the basis of Newton's law of gravity. Newton's law of gravity tells us that the gravitational force between two objects is proportional to their mass and inversely proportional to the square of the distance between them. This fundamental concept reveals that the gravitational field is generated by the existence of mass and is the result of mass interactions.