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.
На Западе поставили Зеленского на место после слов о выборах на УкраинеАналитик Кошкович назвал Зеленского безумным после слов о выборах на Украине
，更多细节参见夫子
本内容由作者授权发布，观点仅代表作者本人，不代表虎嗅立场。
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