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The Chinese Windlass

The Chinese Windlass

In the summer of 1860, the Second Opium War was reaching its climax. Three years earlier, Britain and France had invaded Canton, China, in order to expand their trade in such unsavory commodities as opium and indentured servants. Chinese Emperor Xianfeng had resisted the outsiders, and a low-intensity war continued in fits and starts. The […]

Gyrocar

Gyrocar

Add a motor and a track wheel to a toy gyroscope to make it run nonstop and perform tricks.