Hannah Fry

But that's that's the only way that you can do it.

But this is one of the ways that quantum computers work, basically, is by altering the magnetic field in order to impose certain characteristics on the quantum particles.

But the numbers that are associated with spin, they sort of do make sense when it comes to rotation.

The thing is that spin really does indicate how weird quantum particles are, because if you have a spin one particle, then if you rotate it 360 degrees, it returns to the same state.

You, Michael, are a spin one particle.

Just a slightly larger version than one might expect in the quantum realm.

A spin half particle, like an electron, see if you can spot this, a little bit weirder.

If you rotate it 360 degrees, it doesn't go back to the same point.

You have to rotate it twice, you have to rotate it 720 degrees for it to return to where it started.

Which is, I mean, yes,

weird it is.

This is one of the reasons why Feynman says anyone who says they understand quantum mechanics doesn't understand quantum mechanics.

This is absolutely one of the reasons why people say that the fundamental language of the universe is mathematics, because it becomes so difficult to translate these concepts into words and analogies.

and you lose something in the telling, it's all of this stuff that we're describing here essentially comes out from the structure of an equation and the way that different things relate to one another.

So yeah, there we go.

I think at some point, I know this is now the second of these questions that we've said this about, we've got sort of a nested system here where every question we ask, every question we answer reveals itself into a whole new episode.

And...

which includes more questions and therefore more episodes.

It's sort of exponential growth, the rest of science.

That's kind of what we're going for here.