Tales from the Prep Room - Paramagnetism of Liquid Oxygen
Following in Michael Faraday's footsteps, Demo Technician Andy Marmery explores the paramagnetic properties of liquid oxygen at the Royal Institution in London. The liquid oxygen is prepared...
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Making liquid oxygen is pretty straightforward if you happen to have some liquid nitrogen, which I do. So what I've got here, my cylinder of oxygen, and I'm passing the oxygen through this copper coil here, which is immersed in liquid nitrogen. The oxygen has a higher boiling point than the nitrogen, so it condenses in the coil, so by the time it comes out the other end of the tube, it's a liquid. So this has been going a while. I've nearly got a full tube, so I'm just going to - Oh! yep, that's pretty full. So I'll just put this down over here. OK, yeah. So, good. A half liter of liquid oxygen here. I'll just show you what it looks like. So there you go. That's liquid oxygen. Probably the first thing you w...
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Making liquid oxygen is pretty straightforward if you happen to have some liquid nitrogen, which I do. So what I've got here, my cylinder of oxygen, and I'm passing the oxygen through this copper coil here, which is immersed in liquid nitrogen. The oxygen has a higher boiling point than the nitrogen, so it condenses in the coil, so by the time it comes out the other end of the tube, it's a liquid. So this has been going a while. I've nearly got a full tube, so I'm just going to - Oh! yep, that's pretty full. So I'll just put this down over here. OK, yeah. So, good. A half liter of liquid oxygen here. I'll just show you what it looks like. So there you go. That's liquid oxygen. Probably the first thing you w...
