The resemblance
I have been extensively working on concrete mix designs for past few years now. Initially, I found it difficult to understand the concepts of proportioning the mix designs but later on, with the help of ap[p]t Concrete , an Android app that I developed in 2013, I gained an in-depth understanding of the concept. One day, while using the app, I noticed a very interesting thing that, for a given characteristic of concrete mix, water content remains constant while all other ingredients are required to be adjusted to achieve the desired properties. Eventually, I do not know how it struck me the analogical resemblance concrete mix and a sound wave has. Let us explore how it resembles. The following figure shows a sound wave with the same frequency but different amplitude. The frequency component of a given wave resembles with the water content of concrete mix of a given characteristic for both the components remain constant. Now, what amplitude stands for in a wave...