MOV, Ogg Webm. Some of the formulas are a bit strange.

- What does 4'' mean on this frame. It might not be a 4 but a psi.
- On this frame one can see the gradient of a potential phi as well as a magnetic flux and something which looks like the divergence theorem. One can also make up a Maxwell equation for the curl of E.
- There is an elliptic integral on
this frame, where lambda is both integrated over
as well as is in the lower bound. Tr{ W
^{2}} probably means trace. The 8 π T appears in the Einstein Field equations. The ∇2 A in the wave equation for the electro magnetic potential A.