3 ms·
> But while samarium hexaboride does conduct electricity at room temperature, things get strange as it cools. So maybe the magnetic field undoes some of the ef
by smegel 10y ago
> But while samarium hexaboride does conduct electricity at room temperature, things get strange as it cools.
So maybe the magnetic field undoes some of the effects of low temperatures? Or is that too un-sensational an explanation for modern physics?
- aisofteng 10y agoWhen you suggest that "the magnetic field undoes some of the effects of low temperature", what do you mean? How could a magnetic field "undo" effects of low temperature? And which effects? This sounds like a comment from the all too common armchair physicist that has no real rigorous background in physics.
- smegel 10y agoDid you read the article? It's all there. > Sebastian and her collaborators observed electrons traversing orbits millions of atoms in diameter inside the crystal in response to a magnetic field If cooling the material down turns it from a conductor into an insulator, and then a magnetic field is observed to make it conduct again, then maybe the magnetic field reversed whatever effect the cooling had. Seems a lot more believable than "black holes".
- aisofteng 10y agoI am mostly replying to your initial comment of >Or is that too un-sensational an explanation for modern physics? which has the frankly pretentious air of "I see an easy explanation you don't, why didn't you see it?" This is a common phenomenon where someone reads a pop sci article and decides they know better than experts in the field. So I asked a couple basic questions to see whether you have any real idea what you're commenting on, or whether you're stringing together concepts you have no real understanding of and then being snide. What is an insulator, and what is a conductor? What are the quantum mechanical properties of a material the determine whether it is one or the other, or potentially some sort of mixture? How would or could a magnetic field influence conductance of a material? How does a material transition from a conductor to an insulator, and how does on recognize that transition? For that matter, what are the known laws of magnetic interaction that one would have in mind when trying to model such an interaction? Or have your comments had no real content?
- mf2hd 10y agoRelated video, Feynman can't explain magnets: https://www.youtube.com/watch?v=MO0r930Sn_8 https://www.youtube.com/watch?v=MO0r930Sn_8