MurphyA/hacker-news huggingface dataset:
by brudgers | 2025-07-21 04:53:08+00:00
If I understood the video correctly, the simple mechanical model is an inerter is the inverse of a spring.

Analogous to a capacitor being the inverse of an inductor in an electrical model.

Trying to find a better mechanical analog to the capacitor to optimize a passive suspension was the motivation because mass-damping suspensions had already been banned when active suspension got banned.

But I probably misunderstood the video.
by cornstalks | 2025-07-21 04:53:16+00:00
The chart I linked shows both upper atmosphere and sea level irradiance, for what it's worth. Though it's possible the chart simply isn't the most accurate. I only did casual research.

Doing more research, looking at [1] (the data source for that Wikipedia image), it looks like the peak is between 480 nm (cyan) and 540 nm (lime green) for "global tilt" and 480 nm to 580 nm (yellow) for "direct + circumsolar" (I have no idea what the difference is between "global tilt" and "direct + circumsolar").

Interesting. It seems like the chart in my original comment isn't as precise as I believed.

[1]: https://www.nrel.gov/grid/solar-resource/spectra-am1.5
by alshival | 2025-07-21 04:54:23+00:00
TechnoKing,

I once looked up to you. I thought you were cool and had humanities best interest. You inspired me to get into Ai and machine-learning about a decade ago. I have been doing it since then.

But things have changed, and I learned you lack the expertise to lead in this industry. I learned that you do not have our best interest. Parents buy your cars for their teenagers. For whatever reason, you did not age restrict FSD. We don't even let teenagers use calculators on parts of the SAT. But you... don't know what you are doing.

TechnoKing,

I am here to give you a chance to prove me wrong. Accept my challenge.

A duel. On Kaggle.

I will let you use the Dojo supercomputer. I will take you on with a ROG Ally. If you beat me, I will bend the knee.

But if you lose, you must move your rocket. That is my favorite beach, you see. Have been fishing there since I was a child.

TechnoKing, I am the King born from the woman dressed with the sun, with the moon at her feet, and twelve stars in her crown. The Rio Grande Valley is not big enough for two kings.
by Silhouette | 2025-07-21 04:54:33+00:00
The problem, of course, is that any party that gets into power gets in via the existing system, and asking them to change it is like asking someone to train their replacement and fire themselves.

Indeed. But Labour might be facing an electoral wipe out next time anyway like the Tories last year. Even if they do a decent job they're starting from such a bad position that it will be tough to rebuild enough public support for another election victory. Unfortunately that becomes tougher if they actually try to fix some of our long-term problems by doing sensible things that won't pay off in time for the next election.

If they realise that their current strategy of giving the vote to 16 and 17 year olds isn't going to be enough to stay in power and Reform (populist right-wingers) look like they're going to win big instead then there will be a lot of soul searching going on at Labour HQ. Making a change that will at least see them avoiding the fate of the Tories last time might be a bit more palatable for them even if it would still be a bitter pill to swallow for the many Labour MPs who were going to lose their positions either way.
by chrismorgan | 2025-07-21 04:56:32+00:00
A few years ago I was planning to build a velomobile that I would live out of for a year while circumnavigating Australia, and potentially indefinitely. (My plans changed.) I was disappointed at how hard refrigeration information was to come by (maybe I should have sought a traditional paper book), but I was kinda looking forward to figuring out if I could use one compressor to cool a small fridge, cool and perhaps heat the cabin, heat water, and heat a slow cooker (target 80°C). The bits I could work out suggested you might want a different refrigerant for the cooling and heating applications, or different back pressures; but I was rather hampered in my reckoning by my lack of domain knowledge—I was definitely going to have to talk to professionals! If so, and combined with the limited power collection available (<1m² usable solar panels on the vehicle, could lay out more while parked), butane was probably going to make more sense for cooking.

I even ran some naive numbers on the amount of water that would condense in expected conditions, concluding it could be handy but I’d probably still need to source more water.
by tsimionescu | 2025-07-21 04:59:18+00:00
> The EU has an added issue that the COE requires unanimity amongst heads of state to pass EU wide legislation

This is vaguely similar to the truth, at best.

The Council of Europe (CoE) has nothing to do with the EU, you're probably confusing it with the European Council (EUCO).

But the EC is not normally involved in the legislative process. Instead, EU legislation is proposed by the European Comission (EC) and must be accepted by both the European Parliament and the Council of Ministers.

The Council of Ministers is the closest body to what you probably meant, but it's made up of heads of government of member states, not the heads of state. It also doesn't require unanimity to pass a law - it takes at least 4 countries to outright block legislation. There is a procedure in which a single country which is unhappy with a law passing can raise this to the EUCO for additional review, but it doesn't apply to ordinary legislation.

So, no, Ireland can't unilaterally block any such legislation, it has to convince other countries to join in.
by RandomBacon | 2025-07-21 05:01:54+00:00
Texas: generally the cost of living is low. However, if you live in one of the four largest cities, like 2/3rds of the state's population:

- You need a car to do things (lots of financial distress there no matter the state).

- Housing is expensive.

- There is a lot of cheap labor keeping wages lower.

I can see why they might be at the top of that list.
by viccis | 2025-07-21 05:02:25+00:00
I've had a similar idea before, though a bit less optimistic, which is that the people on the internet back then (of which I was one) were a tiny fraction of the population filtered for their nerdy love of promising new tech. It's entirely possible that there's another community type or service that's popular right now among a small nerdy group of people who love new tech that I am not privy to because I am now older and more burned out and less prone to chasing after cool new things.
by freeopinion | 2025-07-21 05:02:40+00:00
"Independent study" is an interesting phrase. You can still browse MIT courses despite AI. You can still read the translated works of Friedman.

This is a commonly used meaning of independent study. But it isn't quite the same as Curie's independent study.

If Stackoverflow is experiencing a steep dropoff it suggests that people are more satisfied with AI. Presumably they are still learning independently with the help of web-based AI.

You should see the damage AI is doing to classroom instruction. People who are trying to learn can benefit from AI just like they could from the massive human effort of Wikipedia. People who are trying to dodge can hurt themselves with AI in the same way people hurt themselves with Wikipedia.

None of that means the web is dying.
Show HN: NativeSwap – Low cost cross-chain swaps without wrappers or bridges
by sourovaf | 2025-07-21 05:02:59+00:00
Hi HN,

We’ve been working on NativeSwap.io, a low-cost decentralized cross-chain swap platform. It lets users swap native assets (e.g. BTC <--> DOGE) directly, without using wrapped tokens or centralized bridges.

Our goal is to make cross-chain swaps cheaper, simpler, and safer. The platform is fully non-custodial and supports both regular and streaming swaps. Under the hood, it leverages liquidity from protocols like ThorChain and Maya Protocol.

Currently, We support the following blockchains:

- Bitcoin - Ethereum - BNB Smart Chain - Ripple - Dogecoin - Litecoin - Bitcoin Cash - Zcash - Base - Avalanche - Arbitrum - Dash - Radix - ThorChain - Maya Protocol

More are on the way.

We currently support Metamask and CTRL as browser wallets, as well as keystore files. Support for additional wallets is in progress.

We built this because most solutions either rely on wrapped assets or require trusting centralized bridges - both of which introduce risk. Many existing interfaces also charge high fees.

Would love feedback on the product, UI/UX, performance, security assumptions or anything else. Still early, but happy to answer questions and improve!

Thanks for checking it out
by algorithms432 | 2025-07-21 05:03:05+00:00
"According to a friend, the IMO asked AI companies not to steal the spotlight from kids and to wait a week after the closing ceremony to announce results." I don't see much reason for the poster to lie here. It also aligns with with what the people on the leanprover forum are saying, and, most importantly, with DeepMind not announcing their results yet. Edit: multiple other AI research labs have also claimed that IMO asked them to not announce their results for some time (i.e. https://x.com/HarmonicMath/status/1947023450578763991 )
by hobofan | 2025-07-21 05:05:13+00:00
Would it really matter? Normally you use those small local models because you don't have the memory to spare for a larger model, so the real question would be: Is an alloy of Qwen3-8B and OpenThinker-7B better than a Qwen3-15B?

Beyond a certain smallness threshold it might also work to constantly swap in the models in and out of memory, but doubt that's a great experience to build on top of.
by pjmlp | 2025-07-21 05:08:55+00:00
Binding just fine isn't the same as taking part in the conversation of industry standards, and being shipped in vendor SDKs.

Requires manual work from people willing to put into the effort, lesser development experience reading documents written for other languages, no out of the box plugins for IDEs, or graphical debuggers support, e.g. CUDA as one such example.
by Terr_ | 2025-07-21 05:09:45+00:00
> Oh wow. That’s why I’ve not been able to appreciate SCP writings?

I feel like there's a pattern (genre?) there that's been niche-popular for for 15-20 years now, which includes TV shows like Lost or Heroes or The Lost Room. It's some variation of magical-realism, for an audience that always wants more and more surprise or twists or weird juxtapositions of normal and abnormal, room for crafting and trading fan-theories and predictions.

But eventually, it gets harder to keep up the balancing-act, and nobody's figured out how to end that kind of story in a way that satisfies, so the final twist is the lack of resolution.
by arp242 | 2025-07-21 05:09:48+00:00
So every consumer will have to do a full toxicology study before they buy anything? Or electrical safety study. Or whatever. And because the same product can come from different sources (or may change from one day to the next), you will need to do this every time. And what if I get cancer anyway? Every consumer will have to sue some random person in China? Completely unworkable.
by jmye | 2025-07-21 05:09:50+00:00
Just more distraction from his abject failure, sorry, willful rejection of a major campaign promise.

At least his voters are getting everything they wanted: a pariah state, bleeding money and international goodwill and stripping them of healthcare and food, so that they can pay for Peter Thiel’s tax breaks, while he spends his time wasting money on golf trips and idiotic nonsense like the name of a private corporation.
by iamflimflam1 | 2025-07-21 05:10:05+00:00
He should really take a look at the crap available on Amazon - much of which is just people reselling Chinese imports.

I personally buy a lot of electronics from AliExpress. But I have enough experience and knowledge to know what not to buy.

Some of the electronics available are downright dangerous - particularly super cheap USB chargers.

We have regulations and standards for a reason.
Show HN: RWD – Turn any webpage into clean and clutter-free article
by ppnpm | 2025-07-21 05:10:23+00:00
RWD is lightweight, distraction-free, registration-free web reader that transforms any cluttered webpage into clean, beautiful, readable format. Designed for those who value focus and clarity, RWD strips away ads, popups, sidebars, newsletter models and anything that interrupts your reading flow.
by soraminazuki | 2025-07-21 05:11:51+00:00
> Especially if there are no big geopolitical risks - which there aren't with SAS for the French government.

Are you serious? Especially when officials working for well-respected international organizations are being sanctioned for their work out of political reasons? This entire article wouldn't exist if there were no geopolitical risk.

From the article:

> “Carniaux … was asked by the [French Senate] commission to guarantee that French citizens’ data hosted by Microsoft would never be transmitted to foreign authorities without the agreement of the French authorities. He replied: ‘No, I can’t guarantee that,'” the report stated.

If this isn't geopolitical risk, I don't know what is.

It's clear that your stated job constantly exposed you to all the talking points of mega cloud platforms. But there are negative consequences too, and they're very real.
by wredcoll | 2025-07-21 05:12:42+00:00
> They're nice because we made them nice

I don't know how to explain to you that white people did not in fact make beaches or beautiful streams or pleasant climates. It seems so obvious.

Also, you were pushed out of your town because a mob burned crosses and shot up your house? Really? Seems unlikely.

It's weird how the people who start talking about racial superiority are always incredibly inferior themselves.
by AlexandrB | 2025-07-21 05:13:12+00:00
In some product categories, it's all the same junk. I was researching dehumidifiers a few years ago and the consensus seemed to be that regardless of brand you can expect it to fail in 2-3 years because internally they all use the same cheap Chinese components. So why not buy an AFLUUHOO dehumidifier instead of a name brand one?

There are also markets where the markup on brand names is insane. For example: take a water pump, then brand it an "aquarium water pump", and suddenly you can charge 4x more for the same thing. Here even bad quality Chinese products win out because the cost is so much less (and it's not even certain that the quality is inferior since the brand names are also made in china).

Finally, I can't stress what a negative purchasing signal "smart"/IoT features are for me. Perhaps some people love having online accounts for their lightbulbs and waiting around for the manufacturer to brick their devices, but it's not my cup of tea. Chinese devices often either lack smart features or use Bluetooth + a very basic app with no logins required. Another win.
by anthk | 2025-07-21 05:13:51+00:00
OpenBSD devs did the same with either XPlanet or Xearth, can't rememeber. Now they use a GeoJson format.

Then you can import it under geo/viking port:

doas pkg_add viking

Open Viking and just load the geo.json file from

/usr/local/share/markers/OpenBSD.geojson
by KORraN | 2025-07-21 05:15:04+00:00
I think it was mostly due to an enlarged fuel tank, as there is no refuelling during races. Also, energy recovering system, batteries, the whole hybrid system. This post has great size comparison: https://www.reddit.com/r/formula1/comments/1i16g7e/f1_car_si...

It looks like the nose got longer as well, I assume this is for crashworthiness.
by dmsnell | 2025-07-21 05:16:46+00:00
TECs are wonderful little devices with operating characteristics unlike comparable devices.

They can be designed to move a specific amount of heat or to cool at some delta-T below the hot side (and due to inefficiencies the hot side can climb above ambient temperatures too, raising the “cold side” above ambient!)

I ran through a design exercise with a high quality TEC and at 8°C delta-T for a wine cooler you could expect a COP of around 3.5–4 (theoretically). This is pretty good! But below the 2.5V max to do that you’re only able to exhaust up to around 40W. For a wine cooler this is not so bad. For a refrigerator it’s a harder challenge because the temperature drops when the door opens, and if someone sticks in a pot of hot soup, it’s important to eject that heat before it raises the temperature inside to levels where food safety becomes a problem. For a CPU it’s basically untenable under load because it’s too much heat entering the cold side thus temperatures will rise.

https://fluffyandflakey.blog/2019/08/29/cooling-a-cpu-with-t...

Things often overlooked:

- Most TECs are cheap and small and come without data sheets, so people tend to become disillusioned after running them too hot.

- You have to keep the hot side cool or else the delta-T doesn’t help you. For a wine cooler this is probably no big deal: you can add a sizable fan and heat sink. For CPU cooling it becomes a tighter problem. You basically can’t win by mounting on the CPU; they are best at mediating two independent water-cooling loops.

- Q ratings are useless without performance graphs. It’s meaningless to talk about a “100W” TEC other than to estimate that it has a higher capacity than a “20W” TEC.

- Ratings and data sheets are hypothetical best cases. Reality constrains the efficiency through a thousand cuts.

When I think about TECs I think more about heat transfer than temperature drops. If you open a well-insulated wine cooler once a week then once it cools it will only need to maintain its temperature, and that requires very little heat movement. Since nothing inside is generating heat you basically have zero watts as a first-order approximation. For the same device mentioned above, it stops working below 1V, and at 8° delta-T that’s a drop in COP to around zero but it’s also nearly zero waste. If you were to maintain a constant 2.5V, however, it would continue to try and pull 40W to the hot side. This would cause the internal temperature to drop and your COP would decrease even though the TEC is using constant power. The delta-T would in fact increase until the inefficiencies match the heat transfer and everything stabilizes. In this case that’s around a 20° drop from the hot side, assuming perfect insulation.

Unlike compressors, TECs have this convenient ability to scale up and down and maintain consistent temperatures; they just can’t respond quickly and dump a ton of heat in the same way.

edit: formatting of list
by gsf_emergency_2 | 2025-07-21 05:17:05+00:00
I don't know how people can convince themselves that they can understand these effects.

Unusually effective heat insulation is exactly how they work. (This is tempered by eg radiative losses, so making them thicker doesn't work better.) placing poorer heat (vs electrical) insulators between peltier material is counterproductive, similar to using resistors to improve conduction between copper wires

Don't ask me for a better explanation :)

As to why COP or even Carnot efficiency hasn't been thrown out in favor of temp-difference independent efficiency metrics like exergy.

I can't tell you either
by yesbut | 2025-07-21 05:18:31+00:00
maybe MS is a bad example, MS is also a monopoly in many respects. Most companies aren't these giants. We've all been in a situation where the C team/upper management make terrible decisions like this without concerning themselves with what the employees doing the work have to say. There are more of those types of situations than being an employee for a market sector monopoly. a company can thrive without its board of directors and handful of owners, but now without its employees.
by cremno | 2025-07-21 05:18:42+00:00
"Windows" did this 11 years ago:

>FILE Encapsulation: In previous versions, the FILE type was completely defined in <stdio.h>, so it was possible for user code to reach into a FILE and muck with its internals. We have refactored the stdio library to improve encapsulation of the library implementation details. As part of this, FILE as defined in <stdio.h> is now an opaque type and its members are inaccessible from outside of the CRT itself.

https://devblogs.microsoft.com/cppblog/c-runtime-crt-feature...
by mango7283 | 2025-07-21 05:19:42+00:00
If you think they should delist it then by all means, raise a petition or bring it to their attention. Perhaps the activist group simply has not had the resources to target this particular title yet.

You already know VISA and/or Mastercard will respond if an activist group raises enough of a concern so what's stopping you?

Ah right, you think if they got one game removed on a petition, they should somehow also be able to remove every single other game that may or may not meet the same criteria even though it probably took them significant effort to the the first game removed and this is some sort of "gotcha" on their moral inconsistency rather than a simple limitation of resources to try to get their will done all at once?
by trymas | 2025-07-21 05:20:15+00:00
I am on a same boat. Beyond meat is extremely expensive. Also from personal experience it neither appeals to vegetarians/vegans (too meat like, with sometimes “bloody” look) nor meat eaters (more expensive than the real thing, fake).

But the biggest gripe for me - it greatly shows how much meat and dairy farming is subsidised (at least where I live). When chicken meat is 4-5€/kg (i see ofen discounts on chicken breast/wings for 2-3€/kg) and grains (rice, buckwheat) are ~3€/kg it just doesn’t make sense to me. Similar with milk vs alternative milks.

Hence it doesn’t at all surprise me if you do some “lab grown” meat alternatives from plant proteins - you will have 5x more expensive product (if not more).

With all this technological advancements it seems bizarre that we as a humanity still spend so much earth resources on growing animals for slaughter. I know it will not disappear and I don't wish that, but the amount of problems it causes is insane. Diseases (swine flu and avian flu are never ending problems, mad cow disease is one of the scariest things), completely destroyed water sources from pollution, overuse of antibiotics (because of prevalent infections and unsanitary conditions), etc.
by atoav | 2025-07-21 05:20:22+00:00
Given that it can be cloudy and not rain, but (for the sake of the example) not rain without clouds¹ I would agree.

¹: in reality weather can be extremely weird sometimes. I had it rain without visible clouds before on the open field. I am pretty sure it was just very light and uniform fog I was inside of, that would count as a cloud technically, but one could argue..
Claude Code Helped Me Understand a Legacy Codebase in One Day
by IgorGanapolsky | 2025-07-21 05:21:53+00:00
I used Claude Code to onboard to a messy old React/Node repo, and it worked surprisingly well.

I asked it: - “Summarize this repo’s architecture” - “How is authentication implemented?” - “Which models are used in this folder?”

It gave me useful answers based on code structure and variable/function names. Saved me hours.

Bonus: This book helped me refactor what Claude exposed: [Working Effectively with Legacy Code](https://www.amazon.com/dp/0131177052?tag=igorganapolsk-20)
by abhi3188 | 2025-07-21 05:22:23+00:00
A good way to get a model to answer questions about a codebase without overwhelming it or exceeding its token count is to: 1. just give it the directory structure 2. ask it questions based on that 3. after it answers a question ask it if there are any specific code files it needs to better answer the question you asked 4. attach only those files so it can confirm its answer and back it up with code