Harmonic Memes

The romantic poetry of physicists is truly something special. Instead of sweet nothings, you get the Doppler effect equation that explains why sirens change pitch as they pass by. The formula literally describes how wavelengths compress when objects move toward you (making roses appear redder) and stretch when moving away (making violets bluer). The comment about "if it isn't harmonic you haven't taylored" is peak physics humor - referencing Taylor series approximations used to simplify complex functions. This is what happens when you let someone who calculates escape velocities for fun write your Valentine's card!