wholesale Geography Teaching Aids Product Introduction The Transparent Celestial Globe is a model of the celestial sphere and may be compared to a world globe, which is a model of Earth. The globe is valuable in learning the locations, names, and shapes of the constellations, just as the world globe is used to learn the locations, names and shapes of countries and continents. When you look at constellations and stars through the earth or from the inside out, you can see the real relationship between them, similar to looking at the sky in a large planetarium, where stars are projected on the dome ceiling. The model also clearly and simply shows the obvious relationship between the earth and the stars, planets, galaxies and other celestial bodies in the universe. It is designed to display the position of a star at any given time and date as seen from any position on the earth. It is essentially a three-dimensional star probe and does not mean to show the actual motion of the earth, moon and planets. All observations are centered on the earth. Therefore, the earth is located in the center of the earth. The handbook explains basic astronomy concepts and how to set the globe for time and place to show the actual positions of the stars. Once the globe has been set, it is possible to visualize what stars are visible and where they may be found in the night sky. Product Specification Product name Globe Celestial Material Plastic Size 蠁320x370mm The 12-inch diameter transparent star globe surrounds an Earth globe mounted within the outer sphere. The terrestrial globe may be rotated independently with the knob at the South Pole. The stars in the heavens have been projected down to the 12-inch celestial globe, and this spherical star map shows and names the constellations, stars to the 5th magnitude, major nebulae, bright star clusters and the Milky Way. A movable sun inside the star globe can be positioned by date along the ecliptic scale to show its position as seen from Earth at any time and place. In addition to the ecliptic scale, the right ascension and declination scales are indicated on the star globe. The right ascension scale is calibrated in hours and corresponds to longitude on the world globe, while the declination scales are calibrated in degrees and correspond to latitude. These scales are used in locating a star much as latitude and longitude are used in locating a place on Earth. Product feature and application Apply to Middle School Geography Maintenance and precautions When in use, the sphere can be rotated freely by flicking it with your hand. Keep the ball away from dirt and sharp objects. Do not place the globe in strong light to prevent fading. If there is any stain on the spherical surface, it can be wiped off with a soft cloth dipped in water, not with chemical solvents. If it is found that the spherical surface is lifted due to touch, the lifted part can be stuck with glue. wholesale Geography Teaching Aids website:http://www.shenmateaching.com/lab-equipment/geography-teaching-aids/