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.
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Unlike the Flip, the Go lacks creative modes and more advanced features. Instead, it’s just a simple point-and-shoot camera, just like the Mini 12, which makes it a little easier to use. There’s no Bluetooth or companion app for added effects; however, the camera does include a self-timer and a larger selfie mirror. The smaller prints may disappoint those who prefer traditional Polaroid sizes, though, and its modern design lacks the retro charm of older models. But classic Polaroid cameras didn’t come with an app, either, and the Go’s simplicity makes it an a easy-to-use option that delivers a traditional instant film experience at less than half the price of the Flip.。WPS下载最新地址对此有专业解读
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