frequency-2
Explanation
This comic shows a professor at a chalkboard lecturing students. The chalkboard is filled with complex mathematical notation, and the professor says: "Welcome to day one. We start with a frequency-domain integro-differential equation containing complex exponentials, which is multiplied by a dyadic Green's function projected onto a non-orthogonal basis. This is an approximation, of course."
The caption reads: "Everyone hates on reductionism in physics until they see what engineers have to do to describe a simple antenna."
The joke is about the gap between the elegant simplicity of fundamental physics and the terrifying mathematical complexity of applied engineering. In theoretical physics, Maxwell's equations governing electromagnetism can be written in a few compact, beautiful lines. Reductionism -- the idea that complex phenomena can be reduced to simple underlying laws -- is often criticized by people in other disciplines as being naively oversimplified.
However, the comic points out that when engineers actually have to use those "simple" fundamental laws to design and analyze real-world objects like antennas, the mathematics explodes into nightmarish complexity. Antenna theory really does involve integro-differential equations, Green's functions, dyadic tensors, and non-orthogonal basis projections. A "simple" antenna is only simple as a physical object -- describing its electromagnetic behavior from first principles requires extraordinarily sophisticated mathematics.
The humor works as a defense of reductionism: yes, physics reduces everything to simple laws, but that simplicity is genuinely powerful -- because the alternative (working out all the details for any real system) is horrendously complex. The people who complain about physics being "too simple" don't appreciate just how much complexity lurks in even the most mundane engineering applications of those simple laws.