Giga, Steve Jay, BOB discussed on The Skeptics' Guide to the Universe

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That's minus four one hundred fifty nine point six seven Fahrenheit, minus two seventy three celsius standstill, essentially purposes, you can't get absolute stillness. Stills. It's going to get no, no, no real movement or very very little the minimum. Can we just call it refrigerated superconductivity? This is refrigerator temperature. Can we be clear about that? I get that. It's not crazy cold like, it's always been the fast. But it still requires like a machine, right? And you end also two million atmospheres. Hasn't laboratory. Laboratory we're talking about you know, what what's our confidence levels for real room temperature superconductivity in the future. So but back in these early days, the progress was really slow. I mean, there was a lot of enthusiasm. But if you love this tick, if you simplistically extrapolate the progress that was made in superconductivity from nine hundred eleven to Mateen seventy we would have room temperature superconductivity in the year, twenty eight forty really slow very little progress. But that leads me into the second age, and that's our call that high temperature superconductivity, well, lots of people call it that ATS high temperature superconductivity this. This realm was discovered by IBM researchers nineteen Eighty-six in ceramic material. Steve jay. I know I'm not sure I remember that that was huge Eric so excited. This was a huge advance. I mean, it really was because you're going from what was approximately four point two Kelvin to about one hundred thirty three to one thirty three is a huge leap. That's a huge leap from four point two things. Really looked looked amazing and promising and I would've thought by twenty nineteen we would have our superconducting wire at Home Depot. All right enough of that. I'll stop complaining, but that was a second age and things really really promising. So now so to follow the previous ages initials. I'll call this third age artists or room temperature superconductivity care our room. Trimble and the high temperature when you said those numbers, you meant positive not negative, right? One one thirty three Kelvin or minus two twenty nine s to twenty. But Murray, very and still chair you compared to compared to near absolute zero one thirty three K is way arming balmy baby. So you could argue that we are essentially on the cusp of this of this of this third age of room temperature. This is it is an amazing leap at the very least. We're seeing very confident hits hints of what what sue may be possible. So let me get into a little bit the nitty gritty, the researchers used diamond anvils to compress hydrogen and Lanham resulting in a new compound L A H ten Lantam hydride, basically Atlanta, Adam surrounded by ten hydrogen atom. So it's it's hydrogen. But it's it's like doped with this one little adamant here. So these animals compressed it to one hundred seventy to one hundred eighty five Giga pass cows and the transition the transition to superconductivity was at two fifty to two hundred and sixty K way, that's really high. That's fifty. Degrees. That's a fifty degree leap from the previous high temperature using this methodology this. This wasn't just a serendipitous discovery. However, this is an interesting angle to this whole thing. This was specifically predicted that's because they're using a lot of this computation based lot of quantum mechanics based computations are being used to determine which compounds are most promising so this Lanham hydride was predicted other predictions say that compounds may be discovered that could reach two hundred ninety degrees k and that's sixty two degrees Fahrenheit seventeen. How's that care is closer to room temperature for you? So. So again there get your. Newest coast. All right. The final question here is Bob. This is all cool. But all right. It's going to be. But what about these stupid pressures? I mean, that's ridiculous. These high Giga PASCAL pressures there how impractical can you possibly be? I agree. But we're still in a lab at this point. And my point is that using these computational advances we may be able to predict other configurations beyond these binary hydride that I've been talking about two superconductor at room temperature that are also stable when decompressed so that's that's where we that's the ultimate goal right here. We want something that that you can you don't need these Giga PASCAL pressures. But something that that that is stable at at sea level, wouldn't that be nice? So so perhaps a reasonable goal would be that the only compression that would be required would not be two million atmospheres. But something more akin to the pressure, you regenerate..

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