This is one of the optical illusions of everyday life that seems to fascinate all of us, regardless of age or education. As we travel down the highway we see cars with certain types of wheels or wheel covers. We know the cars are moving forward just as fast as we are and we know [...]

At some point almost everyone who drives or is learning to drive hears about the dangers of driving immediately after it rains. There is a simple, straightforward answer to why this particular time is more dangerous than before a rain or as dangerous as driving during a rain.
Rainwater not only causes the surface to [...]

Railroad tracks are rather simple structures. After construction crews put down a good foundation of earth and crushed stone for the rail bed, the track is built using timber (often called ties) and steel rails that run parallel at a designated width to accommodate the wheels of the train.
Rails are manufactured and transported to [...]

We can look at a car as a complete system whose parts must work separately but also work in various combinations. This view allows us see a car as a complete package with a purpose – moving us around so we don’t have to walk or ride a bicycle. The car we drive is held [...]