At 02:05 pm 22-08-04 -0400, you wrote: <snip>
>>High temperature superconductors are almost always some type of copper >>oxide (cuprate) ceramic doped with a variety of elements, from bismuth, >>yttrium and lanthanum to strontium and calcium. For unknown reasons, this >>m�lange of atoms conducts electricity without resistance at temperatures >>as high as 130 degrees above absolute zero (130 K or -143 degrees >>Celsius), unlike the conventional metallic superconductors that must be >>cooled below 20 K to become superconducting. <snip> You might think that what I am going to say has to be a joke. 8-) But I assure you I am being perfectly serious. It seems to me that people are making the atomic equivalent of concrete. i.e. a self similar material at the atomic scale. In which case the only things that are relevant are the grading curve of the atoms involved and the atomic equivalent of the water cement ratio, which I presume will be something like the number of free electrons knocking around. Get those right and you will have a jolly good high temperature conductor. And when you have, remember, you heard it on Vortex first. So good luck to all you "Beautiful Island" lurkers. <g> Cheers Grimer
