Andrew McCalip @andrewmccalip Twitter profile

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Andrew McCalip

25 days

I built a thing to fulfill a meme. Bluetooth smooth scrolling wheel. Please don’t buy one. I can’t make very many. But if you must….

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Andrew McCalip

@andrewmccalip

9 months

Meissner effect or bust: Day 8.5 We made the rocks

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Andrew McCalip

@andrewmccalip

1 month

I was terribly disappointed to learn at an early age that nuclear power plants just boiled water, nothing more magical. I think this is a common story.

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust. Day 1. Made good progress on the list of to-dos. I'm doing this all after-hours, so it's been a long day. Since we're gated by the delivery of the PbO + Pb(SO4), which should be tomorrow, we're working on infrastructure first.

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust: day 1.5 Unbelievable outpouring of support. The most positive trend I’ve ever seen on Twitter. It feels like the entire world is shouting, GO! Sigma package arrived! First thermal synth (PbO + PbSO4) might start tonight. Potential partnerships with…

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Andrew McCalip

@andrewmccalip

9 months

Meissner Effect or Bust: Day 12 It might be a bust… we may be over... Positives first! I had one of the very first syntheses in the United States and produced a Pb-apatite structure that demonstrated lattice contraction along with an anomalous magnetic effect. The sample was…

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust. Day 2 An absolute emotional rollercoaster. We've been back so many times, I've lost count The first reaction to make Lanarkite (PbO + PbSO4) is running in the furnace! We opted to do 80% in an open air alumina crucible and 20% in a sealed quartz tube

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust: Day 8 TLDR: I’m cracking open the first LK99 sample about 11pm PDT. I’ll be posting pictures and videos as we go. Probably not live, but nearly live.

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Andrew McCalip

@andrewmccalip

9 months

Big milestone happened today, which represents the original goal of the project! Today I delivered the rocks to @USCMatCon . Proper scientists will now perform MPMS, XRD, SEM to get to a quantitative measure of if we’re back, or it’s over. It’s more likely that we made novel (?)…

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Andrew McCalip

@andrewmccalip

10 months

Seems like a straightforward error. We'll do both. Team should have the PbO + Pb(SO4) Lanarkite in the furnace tonight. We'll do photo dump later. PSA. This is all for fun. We're a few enthusiastic engineers doing this as a hobby project, we just want to see the rocks float.…

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust. Day 2.5 Twitch live stream taken down by engineer that needed his laptop back. Will turn it back on at 6pm when day job (spacecraft) is done. Our colleagues hope to have Cu+P reaction done and delivered as soon as Monday, which means final bake could…

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Andrew McCalip

@andrewmccalip

10 months

T minus 36 hours Why my coworker had this absolutely terrifying magnet in his garage, I have no idea. 😬😬😬 Floating rock evaluation tool - ready

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Andrew McCalip

@andrewmccalip

10 months

This is an emotional rollercoaster. I translated the original Korean paper. Are we back???

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust: Day 4 All quiet on the western front. Furnaces are cooking, and there is nothing to do but wait and enjoy the show. Update on analysis. There was a huge outpouring of support from local and abroad, thank you everyone. We’ve got a world-class materials…

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Andrew McCalip

@andrewmccalip

9 months

LK99 in the USA.

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Andrew McCalip

@andrewmccalip

10 months

@chamath Yes, as fast as physically possible. I think humanity just changed.

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Andrew McCalip

@andrewmccalip

10 months

If you're not reading about modified-lead apatite crystals tonight, what are you even doing???

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Andrew McCalip

@andrewmccalip

8 months

@lexfridman New podcast theme?

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Andrew McCalip

@andrewmccalip

9 months

Man makes the rocks. Still does not know how the rocks work. Feels like he knows less than before. This sample is impossibly small. Must be micrograms.

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Andrew McCalip

@andrewmccalip

10 months

I absolutely, positively love the reaction that Twitter has had to LK99. Never seen anything so positively received on Twitter. If this can be replicated, the authors will be the next Einstein or Bohr. I hope I can help play a small part in moving humanity forward.

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Andrew McCalip

@andrewmccalip

10 months

Pinned Status: ✅ Done! Equipment (furances, vac, torches) ✅ Done! Reaction 1 (Lanarkite) batch 1 ✅ Done! Reaction 1 (Lanarkite) batch 2 🟡 Thurs morning ETA - Cu3P (phosphide) Poland batch 🟡 Thurs morning ETA - Cu3P (phosphide) 3rd party lab ☐ Thurs evening -…

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Andrew McCalip

@andrewmccalip

9 months

✅ Done! Equipment (furnaces, vac, torches) ✅ Done! Reaction 1 (Lanarkite) batch 1 ✅ Done! Reaction 1 (Lanarkite) batch 2 ✅ Done! - Cu3P (phosphide) Poland batch ✅ Done! - Reaction 3 (LK99). 2pm start, 11pm finish. 🟡 Thurs evening ETA - Cu3P (phosphide) 3rd party lab 🟡…

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Andrew McCalip

@andrewmccalip

9 months

Have to take a breather for 24 hours. We made the rocks, got to a super interesting result, an epic video, now I've got to catch up on the rest of life for a day. Let's take the weekend to regroup, catch up on the flood of papers, and figure out how this will be studied over the…

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Andrew McCalip

@andrewmccalip

10 months

First we made the rocks think, now we'll make the rocks float.

breakingcraft

@breakingcraft_

10 months

@andrewmccalip

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Andrew McCalip

@andrewmccalip

4 months

I'm not emotionally ready for round two, but the gauge says we are indeed back...

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Andrew McCalip

@andrewmccalip

3 months

@DaltonDEmery Wild to think how long those photons have been traveling, just to land in your eyeballs.

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Andrew McCalip

@andrewmccalip

9 months

Very exciting!

Department of Condensed Matter Physics || MFF UK

@CondMatfyz

9 months

🔥🔬 Exciting moment! We're taking the samples out of the furnace after 6 hours at 925°C. 🌡️✨ Check out our video capturing our first try to get #LK99 substance. 🔍 #ResearchUpdate #SampleAnalysis

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Andrew McCalip

@andrewmccalip

10 months

Meissner effect or bust. What a way to spend my birthday

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Andrew McCalip

@andrewmccalip

10 months

This weekend...

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Andrew McCalip

@andrewmccalip

10 months

Andrew Côté

@Andercot

10 months

First claimed successful replication of LK-99 Accomplished by a team at the Huazhong University of Science and Technology and posted 30 minutes ago. Why this is evidence: The LK-99 flake slightly levitates for both orientations of the magnetic field, meaning it is not simply a…

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Andrew McCalip

@andrewmccalip

9 months

Pulled the 13 hour sample. Looks delicious

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Andrew McCalip

@andrewmccalip

9 months

I'm going to try to get a video late tomorrow night that steps through some of the effects I was referring to in previous comments. Have to sneak in some social obligations, can't be all rock all the time. In the meantime, here is a quick clip from my phone, shot through the…

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Andrew McCalip

@andrewmccalip

10 months

Alex performing a public service here! Thanks for putting together all these takes. I'm honored to be the guy mixing the rocks together. We know it's not likely to yield anything, but we'll put all our experiments into the hands of the experts. It's like the entire world…

Alex Volkov (Thursd/AI)

@altryne

10 months

Welcome to LK-99 superconductor twitX corner, new here? Here are a few folks to pay attention to (or follow the list) : @alexkaplan0 - broke the story w/ 29M views, the king of "we're so back, it's over, we're back? " rollercoaster

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Andrew McCalip

@andrewmccalip

10 months

The world's most boring Twitch stream is back. Let's bring Twitch to it's knees. We're going to have a beer after this very long week and watch these numbers slowly tick down to room temperature. #LK99 #MiessnerEffectOrBust

andrewmccalip - Twitch

andrewmccalip streams live on Twitch! Check out their videos, sign up to chat, and join their community.

www.twitch.tv

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Andrew McCalip

@andrewmccalip

9 months

Rock Smashing

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Andrew McCalip

@andrewmccalip

9 months

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Andrew McCalip

@andrewmccalip

10 months

X and I have had quite a week together; now it's breaking into the mainstream. Shout out to @GregoryJBarber @WIRED for being early. People's responses, both public and private, have been amazing. This has been the most wholesome global trend we've seen in years. Please keep it…

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Andrew McCalip

@andrewmccalip

10 months

Numbers that belong on WallStreetBets. This isn't a lab, This is a Wendys

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Andrew McCalip

@andrewmccalip

10 months

Safely in the oven. As requested, we're doing a live stream. It's bring your own audio.

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Andrew McCalip

@andrewmccalip

9 months

Maybe something promising

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Andrew McCalip

@andrewmccalip

10 months

For 5 minutes before the wifi went down, we were top ten on Twitch with 16,000 viewers.

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Andrew McCalip

@andrewmccalip

10 months

Getting the DAQ set up. Will do multi channel thermocouple probes in furnace to ensure best control. We verified 930°C with our small 6"x6"x6" furnace. All data logged to Influx so we can verify ramp rates.

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Andrew McCalip

@andrewmccalip

10 months

Any Los Angeles based labs want to collaborate on XRD analysis? Obviously, it would be great to fully characterize all the intermediate synthesis products. We're going to be receiving Copper Phosphide from both local and overseas labs early next, and the Lanarkite is ready to go…

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Andrew McCalip

@andrewmccalip

9 months

Smashed the rock #LK99 #MeissnerEffectOrBust

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Andrew McCalip

@andrewmccalip

6 months

An arms race between OpenAI, Xai, Meta, Google, and Anthropic sounds like how we get to AGI in less than 18 months

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Andrew McCalip

@andrewmccalip

2 months

Seriously Google???

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Andrew McCalip

@andrewmccalip

9 months

The magnetic responsive material is such a tiny fraction. Only a few shards per tube. Not what it is, it looks quite shiny and metallic. The rest of the material is not the homogenous brick I was expecting to see. A bit confused about what I have.

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Andrew McCalip

@andrewmccalip

10 months

Alright Twitter, do your thing. Find me a Los Angeles based lab (academic or commercial) that can help on the solid state synthesis of Cu3P. We need that P, but must follow the rules.

Andrew McCalip

@andrewmccalip

10 months

Problem! Sigma-Aldrich has kindly pointed out that it is illegal for me to purchase red phosphorus without a DEA license. Apparently it's used in other less interesting stuff like drugs. This is a big problem. The paper calls for the synthesis of Copper Phosphide from copper…

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Andrew McCalip

@andrewmccalip

9 months

So many comments to read through. I really just need to know what Iris thinks?

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Andrew McCalip

@andrewmccalip

10 months

1000c annealing furnace - check Oxy-Acetyl torch - check Quartz ampules - check High vacuum pumps - check Glass working skills - check Red phosphorus - not check

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Andrew McCalip

@andrewmccalip

9 months

Reaction looks like garbage. Very incomplete

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Andrew McCalip

@andrewmccalip

2 months

Spicy take. You’re all doing it wrong, stop being so clever. There’s no hope of spreading to the stars with the first approach. Build launch infrastructure that allows high mass, high margin parts. Be more like oilfield and less like aerospace. Starship is the big brain move.

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Andrew McCalip

@andrewmccalip

10 months

Twitter spaces stream of the furnace audio? #LK99

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Andrew McCalip

@andrewmccalip

9 months

@SizeMichael We wanted to do rock surgery, but I was scared we would shatter our biggest piece. It definitely has a piece that isn't contributing lift.

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Andrew McCalip

@andrewmccalip

9 months

This looks nearly identical to how mine is behaving

Successful growth and room temperature ambient-pressure magnetic...

Recently, Sukbae Lee et al. reported inspiring experimental findings on the atmospheric superconductivity of a modified lead apatite crystal (LK-99) at room temperature...

arxiv.org

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Andrew McCalip

@andrewmccalip

10 months

@altryne @alexkaplan0 @DanielleFong The world has felt so much smaller this week. This just happened. Just in time for our final reaction!

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Andrew McCalip

@andrewmccalip

10 months

@alexkaplan0 4 hours in! Tomorrow we cook, Fedex delivers the first batch of materials.

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Andrew McCalip

@andrewmccalip

10 months

We need to practice one of the critical steps, vacuum sealed quartz tubes. I've done tons of glass working, but never in quartz. It took a bit of tuning, but we achieved a fairly nice tube end after a few tries. This will be tight well below 1e-5torr.

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Andrew McCalip

@andrewmccalip

10 months

After they're cooled off, WE'LL SEE IF THE ROCKS FLOAT! We'll test the bulk ingots, then gradually reduce them in size, using a magnet to sort out any grains that exhibit any response. It seems like all the ones online were <1mm.

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Andrew McCalip

@andrewmccalip

10 months

Thomas working the torch. We grabbed the weldment rotary table positioner and turned it into a tubing fixture. It's quite nice to have the pedal control to flip the tube over. We're amateurs, but this feels like it could work.

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Andrew McCalip

@andrewmccalip

9 months

@Hontas_Farmer When the magnet is placed parallel and flat to the bottom of the beaker, the sample stands at a 90deg angle to the field

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Andrew McCalip

@andrewmccalip

3 months

@elonmusk Makes one nostalgic for these days

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@andrewmccalip

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Andrew McCalip

@andrewmccalip

9 months

I really don't know. It has some of the same responses as the paper, but the appearance makes me think it's less based? Doesn't it look too shiny?

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Andrew McCalip

@andrewmccalip

9 months

I'm working on it guys

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Andrew McCalip

@andrewmccalip

10 months

Oxy torch. Notice the tube collapses and pinches off due to internal vacuum.

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Andrew McCalip

@andrewmccalip

10 months

@DeveloperHarris Potentially the most important material science breakthrough in 21st century? You bet we're going to come in Saturday and attempt to replicate.

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Andrew McCalip

@andrewmccalip

10 months

PbO + PbSO4 from Sigma. Thanks for the fast shipping!

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Andrew McCalip

@andrewmccalip

9 months

I'm a little worried y'all will jump to conclusions. Promise not to? We have some odd magnetic behavior. It's indicative of things,.but ultimately we need to get the grain into some miniature probe measurement system. I've got a lead for a microscale 4pt probe to follow up on.

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Andrew McCalip

@andrewmccalip

10 months

Sealing one end of the quartz tube.

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Andrew McCalip

@andrewmccalip

5 months

@GrantSlatton Dude, and what about the transparent force field bags we have called Ziploc

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Andrew McCalip

@andrewmccalip

9 months

I don't want to succumb to the echo chamber just yet, it seems weird, but could we explain this another way? Is there a lead compound that exhibits ferromagnetic behavior? I cracked open the 3rd tube but didn't see any results. The log picture posted earlier was from that…

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Andrew McCalip

@andrewmccalip

10 months

This was a great test run of the quartz vacuum sealing rig. We were at 3e-3torr when we sealed off. It went smoothly enough for a first effort. I gave it 5min at vacuum to flash off any moisture in the powder.

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Andrew McCalip

@andrewmccalip

11 months

Reading Oppenheimer's biography and came across this line. Might steal it as a job description for Varda R&D engineers.

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Andrew McCalip

@andrewmccalip

9 months

I'm sorry, I'm cutting together the video now.

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Andrew McCalip

@andrewmccalip

10 months

Alright internet, I'm off of work. I didn't miss anything, did I? Where in the 5 stages of grief are we?

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Andrew McCalip

@andrewmccalip

9 months

We're starting to pull our 6 hour fast cooled rod experiment

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Andrew McCalip

@andrewmccalip

9 months

This paper just dropped. Sounds like it explains everything we're seeing. TLDR. Not back. Bordering on over. TLDR. Novel ferromagnetism and diamagnetism, and even a bit of paramagnetism thrown in. Longer TLDR. "To conclude, we have observed a semiconductor-like,…

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Andrew McCalip

@andrewmccalip

3 months

How it started, how it's going 3 1/2 years ago, @WillBruey and I flew to DC to see the Corona capsule spy satellite to see if we could build it ourselves This week, Varda's capsule reentered from orbit and returned safely to our factory in El Segundo CA

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Andrew McCalip

@andrewmccalip

10 months

Take it to a very fine powder. A little bit of clumping.

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@andrewmccalip

9 months

Incredible accomplishment by the Indian space program!

ISRO

@isro

9 months

Chandrayaan-3 Mission: 'India🇮🇳, I reached my destination and you too!' : Chandrayaan-3 Chandrayaan-3 has successfully soft-landed on the moon 🌖!. Congratulations, India🇮🇳! #Chandrayaan_3 #Ch3

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Andrew McCalip

@andrewmccalip

10 months

@TooSilentToKill Who knows! But I can't bring myself to watch just Netflix when there is such a crazy potential, I've got to get to some sort of result on this.

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Andrew McCalip

@andrewmccalip

10 months

Please follow @zebulgar . We need to help him boost his metrics. Can't monetize until 15mil views.

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@andrewmccalip

9 months

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Andrew McCalip

@andrewmccalip

9 months

The ability to make atoms (not bits) on a 24hr notice is a superpower your hardware startup must have. The last two decades of outsourcing/offshoring has eroded a foundational strength of our nation. Cut more metal

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@andrewmccalip

10 months

@tszzl The little guy is trying its best One explanation is that the synthesis is not perfectly homogenous and there are regions of non-superconducting material, perhaps due to melt sedimentation? I'll try to replicate the paper in 72 hours

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Andrew McCalip

@andrewmccalip

1 month

@Robotbeat Just bring the rocks together bro. So simple. No need for exotic plasma stabilization under 20tesla fields.

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@andrewmccalip

10 months

@8teAPi This is WILD. Netflix documentary 100% guaranteed, no matter how it ends.

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Andrew McCalip

@andrewmccalip

10 months

When your welding helmets aren't playing nice with the Oxy, and you've got to rock the aviators.

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Andrew McCalip

@andrewmccalip

9 months

Discussing what to do next

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@andrewmccalip

9 months

Cursor is awesome! Someone finally put GPT into a code editor in a seamless way. It's so elegant and easy. No more copying and pasting. I'm an hour in and already hooked.

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@andrewmccalip

5 months

Immaculate vibes. We're on an unstoppable trajectory. Every GPU is pivoting away from crypto mining to intelligence mining, thank goodness.

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@andrewmccalip

1 month

@frau_gygax Every millisecond of every day, tea kettles furiously whistling into pinwheels.

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Andrew McCalip

@andrewmccalip

10 months

@satyanutella_ I have lived hard enough to become a meme....

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Andrew McCalip

@andrewmccalip

9 months

I realized OpenAI API won't let me use GPT-4 until I have an invoice of at least $1. So I wrote an infinite looping set of bots to talk to each other and teach me, using GPT-3.5. It's my first time making one model talk to another, feels a little weird. Thanks @sama , this is…

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Andrew McCalip

@andrewmccalip

9 months

Quality content. Adding to the humorous vacuum chamber collection.

BreakingTaps

@BreakingTaps

9 months

This is possibly the best thing I've seen in a while

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Andrew McCalip

@andrewmccalip

10 months

Problem! Sigma-Aldrich has kindly pointed out that it is illegal for me to purchase red phosphorus without a DEA license. Apparently it's used in other less interesting stuff like drugs. This is a big problem. The paper calls for the synthesis of Copper Phosphide from copper…

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Andrew McCalip

@andrewmccalip

10 months

Copper phosphide stuck in customs in Poland

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Andrew McCalip

@andrewmccalip

2 months

A huge congratulation to SpaceX team and @elonmusk . As a fan of reentry videos, this one is incredible! The amount of plasma it's generating without slowing down is wild. All this footage is nearly orbital velocity. Incredible. And the Starlink performance?!

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@andrewmccalip

10 months

@GregoryJBarber @WIRED I'm framing this line! It's all about velocity and execution. Moving with high conviction and a single-mindedness. Ruthless execution is a superpower that everyone can practice.

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