[Astronomical Time] Swing mechanical clock | Ancient mechanical wooden teaching aids with painted group STEAM teaching aids

**What is a swing clock?** Different from the clocks seen in daily life, there is a long "adjustable pendulum rod" above the swinging mechanical clock. When weights of different weights are hung and different pendulum lengths are adjusted, the hands on the clock face will go out at different speeds! **★Professor Huang Qinfei of Normal University, Brain-STEAM brain wave research guidance and research and development** **★Jointly recommended by more than 100 primary and secondary school teachers** **★American STEM.org certification** https://live.staticflickr.com/65535/51376178085_f04ecc5997_h.jpg "Timekeeping" is an indispensable technology no matter what era it is, which has greatly changed the stability of human life and technological innovation; and the way of timekeeping has continued to evolve with the times, from ancient water clocks. Missing engravings, mechanical clocks invented in the Middle Ages, and even electronic watches today have improved our daily convenience. During the Ming Dynasty, the Italian missionary Matteo Ricci paid tribute to the pendulum mechanical clock, and presented this Western imported product together with the scientific research results, which amazed the eastern world. In this way, we launched the "swing mechanical clock", which simplified the principle of the ancient pendulum rod, insisted on not using electricity, and used the combination of pendulum length, gears and weights. During the assembly process, children can try different combinations of the three to easily understand the mechanical clock. The mechanism principle, pendulum principle, gear, escapement system design, can even admire the greatness of the ancients' invention of timing tools, stimulate scientific sensitivity and interest, and is an excellent opportunity to practice and learn! **｜Little knowledge of escapement system｜** In the world of watches and clocks, it is often mentioned what is the "escapement"? The escapement was first invented by Philo of Byzantium, Greece, but the escapement used in the clock mechanism was developed by Thich Nhat Hanh, a monk in the Tang Dynasty and a court astronomer, mathematician, and engineer. "Escapement" is literally understood, which means "one retraction and one release", and through this retraction and release mechanism, the power can be collected first, and then other parts can be used to adjust the power, so that the movement can maintain smooth operation. The accuracy of the second hand can run in an orderly manner, and the quality of the escapement will affect the accuracy of the mechanical watch! **➤ Product Details** Difficulty level: ★★★☆ (the highest five-star) Assembly time: about 2~2.5 hours Recommended age: 6 years and older Included in the package: graphic assembly instructions, painting pigments + watercolor pens Product size: 22cm྾9.5cm྾28cm (without pendulum) Package size: 30cm྾23cm྾3.5cm Material: non-toxic 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.**