David Friedberg

Could I walk through a wall?

And then the probability of all of my atoms being in the perfect moment, perfect position, you know, to be able to kind of cross through the wall is so low, it would never happen in this or many other universes.

So there's a small probability one electron can cross over a barrier.

But the probability that many cross over at once is lower and lower and lower, and that makes it very difficult to see at scale.

So one of the parts of your experiment, you created what's called a Josephson junction.

Is that correct?

That's correct.

So this is two superconductors with a barrier between them, right?

I got really fascinated by superconductors when I was maybe 12 years old.

I went and bought a superconducting disk, yttrium barium copper oxide.

From the back of popular science.

And then I went to UCLA and I got a jug of liquid nitrogen.

And then I floated a magnet above the disk because of the Meissner effect.

And I had it at the science fair and I did very well with the science fair that year because I showed this really cool.

That must have been 91, 92.

Yeah, the hard part is getting the liquid nitrogen, but... Yeah, and I had a friend whose dad was like a doctor at UCLA or something like that.

So he was able to get the liquid nitrogen for our demonstration.

I've always been fascinated by the physics of superconductors.

And maybe you can just explain one of these important features of superconductors as it relates to kind of resistance and current flow.

And then we can talk about your experiment.