Couldn't resist so I had a look again.
Physics is definetely not my strongpoint but I found this website here.
*Epsilon = electrical permittivity (e0 = 8.854 x 10 - 12 F / m) and a bunch of other stuff.
Ill leave that to the electronics people =). It seems to have some sort of meaning that is relevant to the card but possibly not the entire equation.
I'm going to skip to the back page for a while. I believe, whether this card is bunk or not, that this is a reference to the 5th dimension. This
video The 10 Dimensions
is good at explaining the concept of dimensions and states that going into
a higher dimension can allow you to change position in a lower one.
Eg. A 2d piece of paper folded over now joins the edges that were previously very far from each other.
Now think of this: If the 4th dimension is time, then theoretically going into the fifth 'could' allow you to move to another position in time.
Now back to the back side of the card. The number five and (what I perceive to be) the unfolded cube (of only 5 sides, bottom not counted) are both
done in a shadow font. Without going into too much depth I think what the card is trying to say is that our 3d environment is simply a 'shadow' of
the 5th dimension. This makes sense to me because theoretically the fifth dimension is time X possible worlds. Imagine there was a floor packed with
one layer of marbles (all representing our Earth in different states of time and possibilities) covered in a sheet representing the 5th dimension
(time X potential worlds). Each version of Earth is only perceived to be the same thing in the 3d world, yet when viewed from a 5d perspective you can
tell where they stand in relation to time and possibilites. Obviously there wont be enough marbles but hopefully my point is coming across
semi-coherently. As you change the fifth dimension - or move through it - the shadow changes (or that which is directly below the sheet with the
marble example). Its hard to write what I'm trying to say here. Theres a reason why I studied biology and not physics!
Anyway, its my belief that the reverse side is a reference to the fifth dimension. From there, you've got light, time and electricity to deal with.
That sure narrows it down!
I'll come back to this later on in the week. This is a bit too much after work.
Maybe we need someone like NeonHaze to have a look.