早期的木版画大多展示几何计算的示意图。 Calculations such as the circumference of the earth, the measuring equipment used and the explanation of its use. Ptolemy's theories about this are also discussed.
早期的木版画大多展示几何计算的示意图。 Calculations such as the circumference of the earth, the measuring equipment used and the explanation of its use. Ptolemy's theories about this are also discussed.