Rooting in Greek The cosmological basis of the astrolabe is the two-sphere universe, and its mathema...

Introduction The term astrolabe can refer to a planispheric astrolabe in the most general sense, or ...

Introduction The starry sky is vast and awe-inspiring. Mastering the laws of the movement of celesti...

Acknowledgements Tsinghua Science Museum Tsinghua University Science Museum (in development) is the ...

Introduction The astrolabe is an open and combinable system. We can use it to demonstrate the revolv...

  1. Cosmic model   II Stereographic projection III Drawing the figure

Rotating View Exploded View