If you’ve flown on a commercial airplane, you’ve likely sat within a hundred feet of an operating gas turbine engine. Gas turbines have been used to power aircraft since the 1940s. But gas turbines ...

There you are in your introductory physics course. The course requirements say that you have to be in Calculus 101 (it's probably not called that) in order to enroll in Physics 101. Why? There are two ...