A dear friend of mine once said that hyperlinks were one of the greatest inventions of our time.
WIKI – Hyperlink

I was just reading about the law of conservation of energy
WIKI – Conservation of Energy

and clicked on the hyperlink for Uncertainty Principle
WIKI – Uncertainty Principle

Which is an aspect of the explanation of Quantum Mechanics
WIKI – Quantum Mechanics

Which deals with explaining how a wave functions.
WIKI – Wave Function

All of this is related to Fourier Transforms
WIKI – Fourier Transform

Which is the theory and math behind fast fourier transforms
WIKI – Fast Fourier Transform

Which is the basis for how we measure audio in the modern world
WIKI – Audio System Measurements

It’s amazing how so interrelated things are.