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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"You really do have to hand it to the gang at Fox, they are very creative when it comes to putting a positive spin on things," says Kimmel in the clip above. "This was the headline from foxnews.com last night, I went on to see what was going on: 'Trump celebrates 'turnaround for the ages' in record-breaking State of the Union Address.' I was like, what record did they break? You know what record they broke? It was the longest State of the Union speech ever. It beat the previous record held for longest speech held by Donald Trump."