David Kirtley

But it takes you into another direction.

So your analogy of the campfire now breaks down because now the campfire is expanding.

It's pushing back on something.

And so now it's the analogy of the piston engine.

As you move from the match, the campfire, to now pistons.

And so you use in a piston engine, you use the motion of the piston, the pressure on it and the motion of it to do something useful.

And in a piston engine, it's to turn a crankshaft and run a... Turn a crankshaft and...

run wheels or maybe even a piston engine to turn a crankshaft and run a generator and make electricity.

And in fact, you can do it pretty high efficiency in a generator using that method, using the expansion of that piston.

And what we do is use the expansion of the magnetic field to extract that electricity.

And we believe you can do it much, much higher efficiencies.

In fact, there's been theoretical papers that show not 30 to 35% efficiency like a steam turbine can do,

But 80% efficiency, 85% efficiency, extract much more of the energy of the fuel in that process.

That measure is how much of the thermal energy that gets outside of the system is then converted into electricity, which is the thing we care about.

We're not in this to make fusion.

We're in this to make electricity.

And we're using fusion to make electricity.

And so from my point of view, that should be the focus, is how do we get to that?

So that's the efficiency factor.

of that thermal energy that makes it out to electricity.