vuljanov

[GegenStandpunkt @GSP_Verlag]

Am 20. Dezember erscheint #GegenStandpunkt 4-24
Darin Artikel zu den Kriegen in der #Ukraine, in #Gaza und zum restlichen Flächenbrand im Nahen Osten; zu #Verdi und der Sozialpartnerschaft zwischen #Volkswagen und #IGMetall
https://t.co/aHDWebbq0T

[vuljanov @vuljanov]

@roter_pander Hier

[vuljanov @vuljanov]

@roter_pander hier

[vuljanov @vuljanov]

@roter_pander ✊

[vuljanov @vuljanov]

@Bobbysizemover @AbandonedScorps #Radix

[Andrew Côté @Andercot]

First video of LK-99 Full Levitation, aka flux-pinning

This video was just posted to the Chinese video-sharing site BiliBili and claims to be a highly pure synthesized sample of LK-99.

What is the physical phenomenon behind this and what does it mean?

Levitation of superconducting materials is a phenomenon unique to what is called Type-II superconductors, and is an effect whereby magnetic field lines becomes 'trapped' as it passes through the material, providing the force needed to levitate. These are the popular images and videos of cryogenically-cooled discs floating above a magnet frequently seen online and in the pinned post on my profile.

You can think of this like strands of hair being caught in gum - the gum is suspended in mid-air by adhering strongly to the hair as the hair passes through it. The hair in this case is magnetic field lines and the gum is the Type-II superconductor. Just like hair comes in individual strands, or in other words hair is 'quantized' or 'discrete', so is the flux trapped at the 'pinning centers' quantized in what are called 'magnetic vortices' - the quantization of pinned flux lines is a key property and distinguishing characteristic of Type-II superconductors (although technically can occur in Type-I superconductors if the material thickness is smaller than the London penetration depth, which is indeed very small - specifics for the physics nerds out there).

Flux-pinning is entirely unique to superconductors and is also wholly distinct from the Meissner effect. It is not a property of diamagnets or diamagnetism.

At @TRIUMFLab I contributed to flux-pinning studies in Niobium crystal superconducting radio-frequency cavities used for particle acceleration. In that application, trapped flux poses an issue by increasing the remnant surface resistivity of the cavity, which has the effect of decreasing its effective quality factor or Q-factor, which is a measurement of a resonators efficiency. SRF cavities typically have Q-factors of 10E10 and trapped flux at pinning centers reduces the maximum effective accelerating electric field used to drive charged particle bunches close to the speed of light.

Flux pinning is thought to arise in some Type-II superconductors by small imperfections in the crystal, also called volume defects, that enable flux to penetrate the material. In SRF cavities an issue that arises is any magnetic field that is passing through the material, e.g. by the Earth's background field, can become pinned or trapped inside the cavity as it transitions into a superconducting state. See some attached plots in the comments from a study showing how the surface resistivity of SRF cavities increases the more there is a background field as the cavity transitions into superconducting state.

This is the first video I am aware of that claims to show the flux-pinned levitation of a LK-99 sample. If this is in fact what is happening, then it is a very unique and promising finding of this new materials properties and potential for future study.

If this is real then it is truly ground-breaking

[Florian Aigner @florianaigner]

Neues vom möglichen Supraleiter: ES BLEIBT SPANNEND!
Jetzt gibt es theoretische Hinweise, dass das neuentdeckte Material tatsächlich ein Supraleiter sein könnte. Gleichzeitig arbeiten mehrere experimentelle Teams daran. https://t.co/MXvQ0pVqno

[SilverSwap @SilverSwapDex]

Our friends at @combfinancial want to raise your $SPIRIT by offering us a surprise.

Like and RT to accept this surprise 🥂

2/3

$FTM

[vuljanov @vuljanov]

@radixdlt @ociswap

[COMB Financial @combfinancial]

📢 ATTENTION INVESTORS

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A token of gratitude for those of you who beelieve in our vision & have show loyalty to $COMB🤝

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[C(o,o)chie 🔮 @crypto_coochie]

The time has come for the @ProjectEuropa_ giveaway!!

WL is up for grabs. The WL allocation gives you early access to the platform and the ability to invest up to $1K.

$ORBIT

Like/RT to enter
Must be following @ProjectEuropa_
Open to enter until Sunday 10 am CST

[vuljanov @vuljanov]

@cobie @coinmamba @Tetranode Metric system ftw

[vuljanov @vuljanov]

@RadLadsXRD rdx1qsp0ana62ww66zvdhgtx8920jre8r7q5shc70np9cjrc88uyeyt47zcrjmpzn

[RadLads @RadLadsXRD]

🚨Valentine's Day Giveaway! 🚨
Ends 08/02 14:00 GMT

1 Red themed RadLad to 5 random winners for the upcoming Valentine's day❤️ Just like, retweet and comment your wallet address to participate!

[vuljanov @vuljanov]

@takegreenpill Capital - Karl Marx

[vuljanov @vuljanov]

@Walt_Crypto @Walt_Crypto I don't know how, but can you think about implementing anti-whale measures in the frog DAO?

[Dan Hughes | Radix @fuserleer]

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Prove me wrong! #blockchain #crypto #web3 #metaverse

[vuljanov @vuljanov]

@0xthespaniard @Tetranode *Schrödinger

[vuljanov @vuljanov]

@Meronym4 I hope there is more than NFTs and Ociswap?

[Bobby @Bobbysizemover]

Feeling extra blessed today so figured I should give some love back to the Radix fam with a little #Giveaway Here are the prizes for the winners
- 500 $XRD
- Two rare @AbandonedScorps
- Two @ScryptoPunks
- Two @RadApes
All you have to do to enter is like and retweet! GO!