/sci/ - Science & Math

>>15587989
https://news.ycombinator.com/item?id=36864624
>the critical field and critical current seem very low. 2500 Oe is like 0.25 Tesla. Even REBCO at 77K is >1T. And 2500 Oe is not even at critical temperature but much lower. From skimming through the article I couldn't find the sample size of the current measurement to get the critical current density, not just current which is meaningless (and around 300 mA).
>This means you can't actually push big current through this thing (yet). You can't make a powerful magnet, and you can't make viable power lines, both applications that were the hallmark of "room temperature superconductor revolution".

>>15444675
>Cold fusion
>Going full crank now
Then so is NASA, see
>>15444586
which is a page from
https://ntrs.nasa.gov/api/citations/20210016143/downloads/NASA-TM-20210016143final.pdf

>>15345445
Yes, carbonic acid in your mucous membranes

The Musk 1 morons need to leave

>>14876215
All the juicy stuff in the paper have references to other papers written by the main author of this one, Leif Holmlid, which is a bad sign imo. That said the citations aren't from crank publications as far as I can tell and Holmlid is gainfully employed at the University of Gothenburg. Needs a bigger brain than mine to evaluate this proposal.