Where did the Ferris Wheel get Its Name? 佚名.神奇的知识之书.
The original Ferris wheel was exhibited at the Chicago World’s Fair. 佚名.神奇的知识之书.
By the Ferris wheel the almost indefinite application of the tension spoke to wheels of large dimensions has been vindicated, the expense being far smaller than that of the stiff spoke. 佚名.神奇的知识之书.