Rub then Heat

The Big Idea

Why wheels heat up when we break?

Description

Our cities are full of situations in which two bodies rub against each other. Experience tells us that as a result of these frictions the bodies get hot. Without going any further, in winter, when it is very cold, we instinctively rub our hands to warm them. The cars, when braking, the temperature of their wheels also increase. To explain this phenomenon we have traveled to the mysterious world of molecules’ vibrations. There, we found that although a body is macroscopically still, there are plenty of movements inside. These movements are what determine the temperature of the body and when friction occurs, it varies.

 

 

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Rating: 8.3/10 (20 votes cast)
Rub then Heat, 8.3 out of 10 based on 20 ratings

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