[Astronomical Time] Armillary Sphere | Star Observation Stargazing Teaching Aids Wooden STEAM Certification

**Have you ever thought about using the world's oldest astronomical astronomical observation instrument to observe the stars?** **★Acquired American STEM.org certification** **★Selected as one of the top 100 STEAM toys in the domestic parent-child world** https://live.staticflickr.com/65535/51376178085_f04ecc5997_h.jpg **Time-lapse video of star observation** https://www.youtube.com/watch?v=8JkiBzsXTQU Let us fulfill your wish, take you through time and space, and experience the fun of stargazing in ancient times! Using wood with excellent hand feel, a small and lightweight version that is easy to carry has been developed, and many historical books have been assembled to fully reproduce the armillary sphere with the triple wheel combination of Liuhe Instrument (outer), Sanchen Instrument (middle), and Siyou Instrument (inner). Through the assembly process, not only can we cross the historical gap, so as to understand the ingenious mechanism of the ancients in making the armillary sphere, and we can actually observe the stars and experience the joy of exploring astronomy. Each part is professionally deconstructed by engineers to ensure the highest level of fit and comfort in the assembly. The armillary sphere has also been certified by STEM.org in the United States and has been selected as one of the top 100 STEAM toys in the domestic parent-child world. It is a companion for adults and children to observe the sun and the moon. The best implementation gadget of the stars! **｜A little knowledge of the armillary sphere｜** Zhang Heng's armillary sphere is based on the "Huntian theory" he advocated, and it was made by improving the design of Geng Shouchang in the Western Han Dynasty. The "Huntian theory" believes that the celestial body is like an egg ball, and the sky is equivalent to an egg shell, and the earth is like an egg yolk. "Can the armillary sphere really observe celestial phenomena?" In Zhang Heng's time, people also asked the same question. In order to prove that the armillary sphere can observe celestial phenomena, he conducted tests indoors. According to the astronomical azimuth displayed by the armillary sphere, he accurately stated the position of the stars, which was consistent with the astronomical phenomena observed outdoors, and also convinced everyone that the armillary sphere could accurately measure celestial phenomena. ! **Armillary Sphere Introduction** https://www.youtube.com/watch?v=-yDAQfmaENs **➤ Product Details** Difficulty level: ★★★★ (the highest five-star) Assembly time: about 1.5~2 hours Recommended age: 6 years and older Attached to the package: graphic assembly instructions Product size: 12cm྾12cm྾18cm Package size: 25.5cm྾14.5cm྾3cm Material: birch Origin: Taiwan **➤ Precautions** • Please use the attached sandpaper to polish the wooden parts before assembling, and pay attention to the small parts, please be careful not to swallow the small parts. • No need to use glue, just follow the instructions to install the parts in the correct orientation and clips, and confirm the assembly tightness of the parts to ensure that the model can be used normally after assembly. • For missing parts or other assembly questions, please contact the Design Gallery. • The Design Museum enjoys a seven-day appreciation period. The appreciation period is not equal to assembly and trial. If there is assembly, it will affect your return and exchange rights. • Please keep the outer packaging intact when returning the product, and please return the related gifts and contents together. Returns will not be accepted if they are damaged or assembled. **▲ There are additional discounts for large-scale purchases by educational institutions. Click "Contact Design Museum", and someone will contact you.**