Leonardo da Vinci is usually credited with conducting the first systematic study of friction in the late 15th century, a subfield now known as tribology that deals with the dynamics of interacting surfaces in relative motion. Da Vinci's notebooks depict how he pulled rows of blocks using weights and pulleys, an approach that is still used in frictional studies today, as well as examining the friction produced in screw threads, wheels, and axles. The authors of this latest paper used an experimental setup similar to da Vinci's.
Access 40+ use-cases
，详情可参考WPS下载最新地址
Daniel Larlham Jr.
Fujifilm’s Instax Wide Evo Hybrid is nearly identical to the Instax Mini Evo. You can use it to print photos directly from your smartphone, though the $409.95 camera also comes with a 15.67mm lens — the widest used on any Instax camera — for taking wide-format pictures. Ultimately, I preferred the smaller, more travel-friendly Mini Evo, but if you’re into wide prints (and don’t mind spending twice as much), the Wide Evo Hybrid is rather fun. The photo quality is solid and on par with both the Instax Mini Evo and Instax Mini 12. The main difference is that the Wide Evo’s lens captures a broader field of view. It also offers a few additional lenses and film effects, giving users a bit more creative control. I especially liked the Degree Control feature, which lets you fine-tune the intensity of each lens effect applied to your image.