The spinning top is seen as a toy, but it is also the reason of many things in our daily life.

• Fig 1: The precession of a spinning top.
• Fig 2: The precession of the earth with its pole pointing around.
• Fig 3: Sketch of an airplane.
• Fig 4: The decomposition of a spinning top motion.
• Fig 5: Analysis of an airplane motion.
• Fig 6: Precession behavior explanation.

What is Science on Tap?

An online symposium to share popular science with the broader range other than existing researchers. They were held weekly during 2021, and provided multiple topics from social science, biology, mechanical engineering, etc, mainly in Chinese. Xinyi serves as an active speaker, and she usually uses multiple sources to explain the topic. No recordings are available. These figures were used only for educational purposes.