In the latest series of the Netflix documentary Drive to Survive, released on Friday, the Australian driver said he had been threatened by email, describing the atmosphere around what proved to be his final race as “pretty heavy stuff”.
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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How to play PipsIf you've ever played dominoes, you'll have a passing familiarity for how Pips is played. As we've shared in our previous hints stories for Pips, the tiles, like dominoes, are placed vertically or horizontally and connect with each other. The main difference between a traditional game of dominoes and Pips is the color-coded conditions you have to address. The touching tiles don't necessarily have to match.
To understand the urgency of emissions reductions, policymakers and citizens need a full analysis of what is at stake.
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