5 ms·
The key thing to notice in this video is that the spec is levitating above a single monolithic magnet. The levitation with ordinary diamagnets such as pyrolyti
by jiggawatts 3y ago
The key thing to notice in this video is that the spec is levitating above a single monolithic magnet.
The levitation with ordinary diamagnets such as pyrolytic carbon requires an array of magnets to create a concave pocket in the field, otherwise the floating sample will "slide off" and fall. Monolithic magnets produce convex fields.
Some people elsewhere also commented that this could be a video of an ordinary high-temperature superconductor, but I doubt it. Such a tiny spec would warm up to room temperature very quickly. I've experimented with broken and shattered fragments of YBCO and it wasn't possible to make small pieces hover like this, they'd warm up too quickly. Also, they were always frosty looking. To make them look black you'd have to do it in a perfectly dry atmosphere, which is a non-trivial setup.
- ghayes 3y agoI had to look up "high-temperature superconductor" since it read like a typo: > High-temperature superconductors (abbreviated high-Tc or HTS) are defined as materials that behave as superconductors at temperatures above 77 K (−196.2 °C; −321.1 °F), the boiling point of liquid nitrogen. They are only "high-temperature" relative to previously known superconductors, which function at even colder temperatures, close to absolute zero. https://en.wikipedia.org/wiki/High-temperature_superconductivity https://en.wikipedia.org/wiki/High-temperature_superconducti...
- px43 3y agoLooks like we're going to need a VHTS and UHTS. Exciting times.
- mensetmanusman 3y agoUltra mega high definition superbconductor
- throwawaymaths 3y agoWe have RTS
- Nition 3y agoWQUXGA Superconductor.
- deleted 3y ago[deleted]
- WiSaGaN 3y agoDespite their names suggesting otherwise, high-temperature superconductors actually require a colder environment than their room-temperature counterparts. This may seem counterintuitive, yet it's a perfect illustration of the idiosyncrasies that arise within complex systems that evolve over time. These naming conventions, like the codebases in large corporations, are the outcome of continual modifications that are so deeply ingrained, a complete overhaul would be prohibitively costly. When examining such codebases, inconsistencies and discrepancies are common, and they can appear almost ludicrous when compared side by side. However, it's crucial to understand that they are not mistakes, but rather footprints in the path of progression, mapping out the convoluted journey of technological evolution.
- Dylan16807 3y agoPhrasing it as if high temperature and room temperature are separate categories makes it sound more confusing than it is.
- varjag 3y agoIt's only becoming confusing as the vocabulary begins to leak from specialists into general public.
- rob74 3y agoIt's all relative: the "high temperature" is high compared to absolute zero (~77 K higher), but much lower than "room temperature" (which is defined as around 20° C). And of course these are separate categories, because room temperature is another ~220 K higher than "high temperature" (and also because "high temperature semiconductors" are common by now, whereas "room temperature semiconductors" remain the holy grail).
- Dylan16807 3y agoIt's a subset.
- NhanH 3y agoSuperconductor. We have plenty of room temperature semiconductors around
- proto_lambda 3y agoIt's like "High Frequency" radio waves, which are actually at the low end of the spectrum used in practice today.
- aaron695 3y agoBecause of prediction markets like https://polymarket.com/event/is-the-room-temp-superconductor-real https://polymarket.com/event/is-the-room-temp-superconductor... there is a reason to put in an effort to fake this. This is very well done if faked (dated up the top left), so it would be another first if it was a real fake. That would also be exciting. The strange things are... No one else can find it yet. It's not a phone video off a monitor, it's an actual video, time stamped and watermarked. Poster says Twitter is lowing the quality. It's also a strange aspect ratio and position for lab video (that watermarks a date). It's watermarked with a unknown watermark. Twitter account is brand new.
- yorwba 3y agoThe "LTC" watermark in blue might refer to "linear timecode" https://en.wikipedia.org/wiki/Linear_timecode https://en.wikipedia.org/wiki/Linear_timecode and I guess it's possible whatever equipment they used to embed the timestamp in the video also adds this watermark.
- fallingknife 3y agoThere is not enough liquidity. The max profit you can take from that market by betting on yes at this point is around $17,000. It probably costs something like that or more to do a convincing fake at this point.
- jliptzin 3y agoHow would it possibly cost $17k to make a shit quality video like that?
- fallingknife 3y agoIf "either get your hands on high temperature superconductors or use CGI" is on the to-do list, it's not a good project for only a $17k payoff.
- geostupid 3y agoThanks so much for the link to Polymarket. I haven't seen a prediction site since Intrade.
- xdennis 3y ago> a single monolithic magnet How can you tell though? There are magnets which look like a single thing, but the polarity switches on the same side multiple times (sorry, I don't know what they're actually called).
- ortusdux 3y agoI've heard them called programmable magnets: https://www.magnet-sdm.com/2019/11/21/programmable-magnetized-magnet/ https://www.magnet-sdm.com/2019/11/21/programmable-magnetize... That being said, I highly doubt they are using one in this video.