Yes, but remember we are looking back on the blackbody problem with the knowledge of Quantum Theory. No one could explain why the light seemed to have a quantized energy (\(\displaystyle E = h \nu\)). Einstein's use of quanta of light energy in the photoelectric effect was sticking his neck out pretty far. As it happened it was a good risk.Quantization of What? Einstein derivation of based On Maxwell's theory.
What do the walls have to do with the quantization since the particle are imediately quantized when they are formed since light is produce without a black body. Example, a glowing to piece of iron produces light and does not require a black body cavity to produce light particles.
A symmetry is an operation performed that leaves the state of the object the same as the original. Consider the symmetries of a square. Let (1, 0 ), (0, 1 ), (-1, 0 ), and (0, -1 ) be the vertices of the square. We can rotate it by 90, 180, and 270 degrees and still end up with the same square. (A "rotation" of 0 degrees is the identity of the group because it leaves everything alone.) We can also make a reflection about the x-axis, y-axis, and over the lines y = x and y = -x. The collection of these symmetries form a group known as \(\displaystyle D_8\).Could you explain in your own words (less than 100) what symmetry is? It looks like something that is being applied to Maxwell's electromagnetic field or something. Just a brief abstract what is the structure and purpose of symmetry and what is its suppose to prove or is it just simply physics rhetoric with an R since you already know everything about it it is easier if you describe what you want to say.