Ancient Chinese Compass Designs - Floating vs. Hanging Types #1483549 (License: Personal Use)

The image depicts two historically significant compass designs from ancient China: the floating compass, where a magnetized lodestone or iron needle rests on a piece of cork or reed in a water-filled vessel, and the hanging compass, where a thin needle is suspended by a silk thread inside a cup to minimize friction and allow free rotation. Both were developed during the Song Dynasty (960-1279 CE) and used for divination (feng shui) and later maritime navigation. The illustrations emphasize simplicity, ingenuity, and the foundational role of magnetism in early orientation technology.

This image is typically used in educational articles, museum exhibits, or history-of-science web pages explaining the evolution of navigation tools. It serves users seeking to understand early Chinese scientific achievements, particularly in magnetism and applied physics, and supports learning about pre-modern technological innovation.