Posted by Alexandru Nicolae
I've been a train enthusiast for quite some time, so I thought I would write an article to inform everyone about a very obscure piece of science that you probably encounter everyday if you live in a big city and use streetcars frequently, yet you've probably never even noticed it. Streetcars are amazing pieces of technology that we take for granted everyday, but one of their oddest features has to do with the physics behind their movement. So to skip ahead and answer the question, what do streetcars and beaches have in common? The answer is sand.
