I guess that physicists have hit a wall with their research into string theory and dark matter–how else to explain the recent spate of bored academics calculating the amount of energy required to blow up an Earth-destroying asteroid, or, in this case, the amount of energy required to sustain a force field window for a Death Star landing bay?
As you know from Star Wars (and if you don’t know, why are you reading this blog?), force fields act as an outer door, allowing spacecraft to pass through, while also preventing internal atmosphere from escaping into space.
Such technology currently exists in the form of “plasma windows”–superheated, viscous ionized gas that is contained by a magnetic field. Physical objects can pass through this window, which can sustain a pressure differential of nine atmospheres.
The physicist calculates that the amount of energy required to create a plasma window large enough to accommodate the Millennium Falcon would be 4.7 gigajoules. That’s not a lot of energy, when you consider that a barrel of oil contains chemical energy equivalent to 6 gigajoules.
The physicist, however, offers the following caveat:
In order to fly a spacecraft through this region of high temperature and ionisation without damaging the craft a magnetic field could be erected around the craft with the same strength as the one in the window to prevent any of the plasma getting close enough to the ship to do damage. However, the interaction of the plasma with the two fields could produce effects that the author has not accounted for.
In the meantime, still no word on how many barrels of oil would be needed to power a planet-destroying laser.

























































































