Parity in physics before 1956

32:06meaning C6H1206 glucose. Okay, get a bunch of sugars and then put the put your plain polarized light through the sugars. Okay, and what's going to happen is as the plain polarized light goes through these sugars, it's going to rotate. It's going to rotate. And this we we've got a we've got a little visualization here. >> Yes. It's going to as as the plain polarized light goes through >> the electric field which is only moving up and down. That's how we prepared it. It's going to start rotating >> to the right. >> Okay. Okay. >> Yes. And so >> and so and so you can tell your alien, hey. Okay. So just watch how the how

32:46your light rotates through this sugar water thingy. Okay. And then you know the direction that the light comes out. That's the right. That's the right. >> Okay. And the other way is the left. >> Okay. >> Okay. >> Okay. >> Seems seems pretty cool. >> I'm I'm I'm tracking. >> See seems pretty good. >> The problem is the sugars that we make on Earth all have a certain kirality because the the sugars are a C6 H1206 ring. There's a ring of carbons, right? It's a it's a little hexagon of of carbons and oxygens. And the way in which they're arranged are always in one particular

33:28handedness. Okay? You got to you got to go you you you got to go clockwise to see the the the way that the elements are formed. But you could make sugars in the lab >> that are not >> that are the exact opposite direction. >> The corality is the opposite. >> Okay. The kirality is opposite. It's just that all of life on Earth >> for some reason makes onehandedness of sugars. And that has to do with the fact that all of the proteins that we have on Earth have onehandedness. Okay? So there's proteins like all of the primary amino acids in life, right? Except one glycine are chyro. And so there's

34:08isomers of these amino acids where you've got the D isomer and the L isomer. the left-handed form and the right-handed form. And most of our amino