A cycloidal gear drive is one of the most mesmerizing reduction gears to watch when it is running, but it’s not all just eye-candy. Cycloidals give decent gearing, are relatively compact and ...

There are five different categories of scales — placoid, cosmoid, ganoid, cycloid, and ctenoid — but most commonly eaten fish have cycloid or ctenoid scales. Cycloid and ctenoid scales are ...

Meanwhile, French artist Raphael Zarka and architect Jean-Benoît Vétillard’s skateable sculpture Cycloid Piazza has been commissioned by the museum with the support of Nike, inviting the public to ...