Where have all the equations gone?

When I am not here at the seminar I am student of physics at the Niels Bohr Institute at University of Copenhagen. A few days before I went to Kalø I had an examination in Optics (the physics of light phenomena). To prepare for the exam me and friend "lectured" for each other. Every day for a week we would take turns in presenting some theory and we would discuss different aspects of the theory as we went along. Quite hard but very giving.

Here in Kalø we in facilitator group have had numerous of discussions, but in these discussions there is no "right" answer, at least not in same sense as in physics (and science). In these discussions there is no way of representing different theories and opinions with equations and symbols, it is all just words. And we never arrive at a simple answer (like when you are solving a physics problem, you end up with a simple expressions, or just simply a number)

So you could say, this is really a change in the intellectual environment for me. And like it....

Cheers,

Søren

PS. Bonus question: What does the above equation describes?