On 2/25/2012 3:46 AM, Warp wrote:
>  even air resistance is virtually inexistent because the rod is
> perfectly vertical and falling straight down

At high speeds this won't necessarily hold due to the viscosity of the 
air.  A common, and generally accurate, assumption in fluid dynamics is 
that fluid velocity along a surface is equal to the velocity of the 
surface, and thus the viscosity of the air would lead to potentially 
significant drag and the rod would almost certainly have a terminal 
velocity well below relativistic speeds.


>    Where is all this energy coming from? Clearly the portal technology itself
> must supply this energy in order to transfer matter from one portal to
> another, and it was supplying all these kilotons to the rod when it was
> falling down. But where does the portal gun get all this energy from?
>

I've always wanted the answer to be that the power is supplied by the 
walls, which is why you can't put a portal on all of the walls. 
Unfortunately this seems to be inconsistent with some bits in the game, 
so I can't think of an answer better than technobabble magic.

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