Hacker Newsnew | past | comments | ask | show | jobs | submit | parineum's commentslogin

What's an antenna if not something that can receive radio signals?

The same way an LED is not a solar panel. It will give you some voltage, but basically a rounding error above zero.

Antenna are about capturing energy over macro scale areas. This atom is measuring electromagnetic oscillation at a particular point in space. Technically you can recover a signal, but only a rounding error above the noise floor. It doesn't capture energy.


> What's an antenna if not something that can receive radio signals?

>> the instantaneous bandwidth is still too narrow to actually receive anything but narrowband carrier

so it is a "useless" antenna.


Could it pick up a THz chirp signal?

> less demand from new system builders mean depressed prices

Only if they overestimate demand and overproduce CPUs. Otherwise it will lead to higher prices because there's less economy of scale.


> However EVs and green-tech are analagous to the XFEL path, they built from scratch and leapt over the competition that was happy to sit on it's existing profitable tech instead.

I'm not convinced Chinese EVs are technologically better. They've just command economied demand and reduced costs via mass production. The technology seems pretty inline with anything available in the West but demand isn't there to take advantage of scale. China is ahead in EVs by metric of quantity for sure but I don't think they're got next gen battery tech they are keeping secret.


Making batteries for $80/kWh IS the next gen tech. I’m pretty sure China invented lipo (EDIT: I meant lfp) (at least they’re the only ones making it) and they’re currently pushing ahead on sodium ion. They are also the ones who have pushed lithium ion to the point it is today. My first EV was a Nissan Leaf that cost 40 grand and could drive 80 miles. Now you can buy 300-mile cars for about that. That was all China’s doing and nearly every EV on the road today uses their batteries.

They have done to the battery market exactly what Taiwan did to the chip market. You can buy an EV made anywhere the same way you can buy a laptop made anywhere. But guess where the chips and batteries were made.


They didn't invent LiPo (and you probably don't want those in a car), nor did they invent LFP (LiFePO4) but they did license it when no one else wanted to and turned it into probably the best EV battery tech you can buy today. They didn't innovate a ton on the chemistry but they did on the packaging side, BYD and CATLs structural pack designs exploit the low thermal runaway characteristics in a way that wouldn't be safe for NMC etc to reach near parity on density but with better longevity and cost.

They will be the first to sodium ion and solid state though.


It's kind of ironic that BMW pushed CATL into the EV market [1].

[1] https://cleantechnica.com/2022/06/30/how-herbert-diess-zeng-...


That's not the "Gotcha' you think it is.

Net immigration is down. That counts illegal immigration and deportations, presumably which are way down and way up, respectively. Both stats have nothing to do with how many people _want_ to be in the US, just how many people are able to get here.

How long is the of _applicants_ for residency in the US? That's the metric you're looking for. I suspect, with the increased difficulty in illegal immigration, that there is an increase in applications for legal immigration. That's speculation though, I have no idea where to get those numbers.


> Consider if you were hosting the Jekyll Island meeting, how many people of what caliber would you invite to be there? And that’s just one of the meetings we know about. Another good one is the involvement of Bohemian Grove in selecting Ronald Regan to run for president. Their motto, "Weaving spiders come not here", like many institutions, describes the opposite of what actually happens there.

That's some pretty classic conspiracy theory stuff. No evidence of anything nefarious, just heavily implied.


I don't see how that makes the measure bullshit. Outlook and expectations are related to happiness. If you want for nothing but have little it's better than a never ending treadmill of more.

Having a culture that produces happier people in worse circumstances doesn't make those people less happy.


> Having a culture that produces happier people in worse circumstances doesn't make those people less happy

The question is whether stoicism in the face of what most people would categorize as suffering should be classified as “happiness”.


Yes, absolutely. How else would you define it? The whole point of happiness is that is a subjective, internal state. If you just want to know if people live in a cold, dark climate you don't need to ask them.

> One example of them clearly being the baddies is them paying people to social media astroturf to defend the roundup pesticide online [2].

It certainly looks bad but I'm not sure the logic really follows.

It's just modern PR. Companies used to just do that by having good relationships with journalist but now social media has taken a lot of that role away. It's a fairly natural transition for companies to make and I'd be surprised if you couldn't find a lot of major corporations that don't do something similar.

And, also, it doesn't necessarily follow that they are either willingly lying or that their products are unsafe.


Find a vacuum that supports valetudo[1] and a brush/roller like this: https://www.amazon.com/dp/B0F54134JY

[1] https://valetudo.cloud/pages/general/supported-robots.html


Word to the wise: installing Valetudo can be a nerve wracking task even for the tech savvy. On my model, a Dreame L10s Ultra (there’s about three similarly named models and only this exact one is valetudo compatible, and isn’t sold any more) you are strongly recommended to use a custom pcb and to use Debian to run the commands, and not in a VM. If something goes wrong you can permanently brick your device. I ran into all kinds of esoteric sounding errors, and I half gave up and one point since I was burning valuable free time on evenings and weekends to get it done (busy family with small kids and stressful job). The robot sat unused for several months but I eventually got it done. I’m glad I did it but it was an ordeal.

I can repeat that experience but didn't take me quite as long as I had time to walk through it.

However, just this last update, they added support for a new set of vacuums, Midea/Eureka that don't require that PCB.

https://github.com/Hypfer/Valetudo/releases/tag/2025.12.0


SCOTUS has ruled against Trump numerous times.

But they rule in his favor more often than not. They gave him freaking immunity for any crimes he may commit. This alone enables him to disregard the law without any fear of repercussions.

> This alone enables him to disregard the law without any fear of repercussions.

That does not apply to his lackeys though (unless there's a preemptive pardon).

If (!) there's a change in the President eventually, there needs to be a reckoning for everyone that didn't push back on instructions/orders (including all the folks down the line who are blowing up (alleged) drug boats).


Everyone will have preemptive pardons. That has already been guaranteed to them or we wouldn't see so much open lawlessness.

That the president can pardon any criminal providing no justification is preposterous nonsense. Much reform is needed.

You've read that they had more days off but that's only because they couldn't work in the winter.

Instead, they hoped the food stores would last and the kids wouldn't die so they could help work the land next year.


Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact

Search: