Here is a topic worth exploring for the scientists among us: piano tuning.
These days, pianos are tuned with “Equal Temperament.” However, Bach wrote two books of Preludes and Fugues for
Here’s a cute 4 min video that goes very fast, but gets into the math of it! Kind of fun to think about.
When tuned with “Equal Temperament,” pianos are permanently out of tune! See this for more information.