"Do you know that there's a bomb today which has more velocity and
  destructive activity than the atom bomb? It's the electronic
  bomb, and some country or other has this in its hip pocket at
  this time trying to do something with it.

  The conductivity and resistance of a Kelvin zero or a near-zero
  item (that's -273 or something like that on the centigrade
  scale), no motion and so forth, there's no resistance; and you
  can keep on pumping electricity into it and into it and into it
  and into it and into it, and because it has no resistance it has
  infinite capacity. If you get something at -273 or nearly so, you
  can keep pumping electricity into it and into it and into it and
  into it and into it and into it, until you have billions and
  billions and billions of megavolts in it.

  Now you keep that item near -273 degrees and when you want to
  explode it, what do you do? You simply heat it up. And is it very
  much of a job to heat it up? No sir. And the second it gets hot,
  what does it do? It releases almost instantaneously these
  billions and billions of megavolts of electricity.

  Have you ever gotten in processing an electronic flash in the
  face? They're quite common. Have you ever been near a switchboard
  that blew up? Well, it gives you some sort of an idea of how much
  impact there can be in a single bolt of electricity. And here you
  have multiplied this and multiplied it over and over, over and
  over, over and over, until you finally have an enormously
  powerful force which is releasable in a very short space of time
  and which is containable in a very, very tiny cubic spaceage. [sic]

  What they do is take a piece of space, then, and reduce it down
  toward -273. And they take this piece of space, and they pump it
  full of electricity. And it doesn't matter how much they pump
  into it; they can just keep pumping electricity into it
  practically forever. And that's the electronic bomb."

  [Hubbard, "SOP #5 Long Form Step II", lecture of 16 Jan 1953]