The planetarium is a science instrument that simulates a starry sky performance, also known as a false antenna. Demonstrate all kinds of celestial bodies seen by people on different latitudes and longitudes on the earth on a hemispherical canopy. For example, the movement of the sun, the moon and the stars, the planets travel through the stars, and the precession of the Earth's rotation axis. It can demonstrate the movement laws of major stars, planets, clusters, and nebulae in the universe in a short period of time. The sun rises and falls, the moon's profit and loss is lacking, and it is intuitive and vivid.
The planetarium in English is planetarium, and the planetarium is the same word in English. The reason for this is that the original planetarium only has the equipment of the planetarium. Regardless of the age of the planetarium, the planetarium is undoubtedly the heart of the planetarium.
The planetarium went through the first generation - the mechanical analog optical projection type planetarium (the planetarium), the second generation - the space type planetarium (the space theater), and the third generation - the digital planetarium (the digital universe) Theater) three stages of development.
The basic principle of the planetarium is to use a stellar projector to project the starry sky onto a hemispherical artificial scorpion to form a "artificial starry sky", and then project the sun, the moon, and the planet into the artificial starry sky through a sun and moon planet projector with a precision gear rotation system. In the middle, the sun, the moon, and the planets are simulated in the artificial starry sky, and the astronomical landscapes such as the celestial body rising and falling, the night sky star moving, and the like are reproduced. If you have a series of attached instruments, you can also display a variety of celestial phenomena, and even show changes in the position of the Polaris and the movement of the stars in the thousands of years. It is equipped with a planetarium designed and manufactured by China, which can display the star names, constellations and 24 solar terms in the Chinese and Western comparisons.
