Arlington County has an extensive network of bicycle infrastructure, including 50 miles of shared-use off-street trails. These multi-use trails are generally 10 feet wide with a solid yellow line striped down the middle to separate users.
Constructive mathematics. Idea. Broadly speaking, constructive mathematics is mathematics done without the principle of excluded middle (or other principles, such as the full axiom of choice, that imply it).
Similarly, when the peaks of one wave line up with the valleys of the other, the waves are said to be out-of-phase. Phase, itself, is an important aspect of waves, but we will not use this concept in this course. How could we observe this difference between constructive and destructive interference. Given the fact that in one case we get a bigger (or louder) wave, and in the other case we get nothing, there should be a pretty big difference between the two. We will explore how to hear this difference in detail in Lab 7.