skysight-inc/HackerNews huggingface dataset:
>It would be interesting to understand why load increases more quickly than thrust for increasing blade counts.

The key to this is that, for both ducted fans and props, a larger swept area is more efficient, while # of blades simply changes the torque/rpm ratio with negligible effect on efficiency. Thus, for a given torque, it's always better to drive two longer blades, than 3 shorter ones.

If you enjoy looking at pictures of WW2 fighters, you'll notice that the early planes had 2 bladed props, the midwar ones had 3 bladed props, and right at the end they jump to 4 and 5 blades - the reason being that the better engines got, the more torque they had to dissipate, and you can only make a propeller so big before you hit ground clearance problems. Helicopters, on the other hand, can make their rotors as large as they like - and so they do, and typically only have 2 blades. Only on helicopters like the Chinook, where they made the blades as long as they could feasibly engineer and still had torque to spare, do you see 3.

> Do ducted fans have similar changes in load-to-thrust ratio given an increase in blade count?

Not really. The parameter that describes how many blades are in a ducted fan is known as "solidity", and while it does have minor implications for blade shape the general efficiency is excellent no matter what. It's actually surprisingly insensitive - you can take a ducted fan designed with a 5 bladed rotor and just slap a 7 bladed rotor in there instead, without even redesigning the blades, and provided the power source is equally efficient at a somewhat lower RPM you basically won't be able to measure any difference in performance at all. Ducted fans can turn shaft power into air momentum with about 90% efficiency.

The reason that large swept areas are more efficient than small ones is simple physics and geometry. Energy (the thing you put in) is 1/2 mv^2, while momentum (the thing you get out) is simply mv. So for best efficiency you want to keep v as low as possible. It's better to get your momentum by moving a lot of air slowly, than a little air quickly.
That's amazing. I can't wait!
Sorted mandates the type you give it implements __iter__, aka that it is iterable. Ruby defines sort as a method on Enumerable.

The difference is that most likely that CPython and CRuby started with different capabilities to map native implementations into the language.

The biggest difference between the two is python adds more functions into the global namespace, while Ruby pushes pretty hard to encapsulate logic within types.
I don't think people should have to live without access to peanuts either, but that doesn't mean I consider lack of them a human rights violation and possible casus belli. Peanut air drops for citizens under peanut-hating governments?
Quote: "Set the CPU cores (2 recommended), Memory (4096 MB recommended)" - this is from setting the Win10 virtual machine.

I'd recommend 6GB instead of 4GB as minimum when dealing with Win10. A typical Win10 on idle, without anything launched in foreground uses around 3GB hence 4GB is kind of at limit.
I mostly lost interest in AAA games when I was 14 or so, but the Switch has been great for going back and playing some of the games that came out around then that I never got a chance to play. The idea of closing out of all my work stuff and rebooting into another operating system is just a complete non-starter, but the Switch is perfect just to grab whenever I'm backing up my hard drive, upgrading my OS, the Internet is down, etc.
I bought a PS Vita just to play Risk of Rain on the go, I've considered buying a Switch to play Risk of Rain 2, but I've torn waiting for a hardware refresh or just getting the OLED-version.
Either the protons shrank or the yardstick grew.
List of EGOT Winners
Most users aren’t affected by this level of attack but some people need the extra security and can live with the inconvenience
I would like to play 'Pong' in my flavicon. Damn it.
it's loosely based on another book, The Organization Man. I think it's loosely accurate in that there are archetypes around the worker, manager and executive, but it's certainly not as clean cut as Venkatesh makes out. I've met and worked with plenty of Loser and Sociopath types; it's the Clueless that I haven't found to exist, but maybe it's an American thing (I'm from the UK).

I think the Sociopath one is most accurate to life but that's just because "executives/investors are profit-seeking goal-maximisers" is both a common trope and pretty realistic - that's their incentive structure after all.
For what is worth, DDG's main provider is Bing so it's nor surprising they returned similar results.
Just using an EC2 server typically involves a load balancer, a web server (nginx/Apache) and another web server like unicorn to manage the threads, and then a database at the bare minimum. That’s not objectively than using an SPA and a BaaS.

If you’re a front end engineer who’s used to working with node then an SPA + BaaS might be much simpler to you than running an EC2 instance that serves basic html.

Edit: and that doesn’t even get into securely managing updates, access controls, infrastructure, etc. those things might seem fairly trivial today but in the future imagine getting dinged for them in an interview.
> That's why we don't use strcpy() and friends anymore.

We definitely do when safe to do so…
I've personally gone back to using Google from being on the Beta, but i'm sure other people will have more success.
I read the docs, and I thought it was all well designed too – the issue I took with it is that Ruby is so incredibly dynamic that it looked like a giant foot gun to me. Well, potentially at least. I know it's powerful in the right hands.

I'm a lot happier with something like Rust, and it arguably comes down to personal preference. Ruby is awesome and fun to write. I'm not a good enough programmer to make it as productive as others in the long term though, especially when working on a large team.
This.

But the Wii failed pretty hard in terms of games.

After the 5th mini games collection it became pretty boring...
As much as I like the console, I hate the hardware issue with the joycons. It feels almost pernicious. It really has put me off playing the thing.
Walking the World: Kyiv
Oh that's interesting, TIL.
> My mental model for resonance and waves requires some kind of constant input energy to maintain the oscillations in the field which produce the particles.

Your intuition is inverted from reality.

Quantum mechanics dictates that a harmonic oscillator in a state will remain oscillating in that state indefinitely unless perturbed.

This has the counterintuitive effect that an atom with an electron in an excited state will remain there indefinitely if you can cut off the atom from external interactions.

This was, in fact, one of the arguments that Bohr used against Einstein. Experimentally--atoms decay--there is no denying that. However, Einstein's formulations said that atoms should not decay without external influence.

It turns out--Einstein was right. However, those kinds experiments require things like laser traps that were far beyond the capabilities of the time.
Mel Brooks!
You can send them in to be repaired for free.
I used to be an avid fisherman and thirty years ago I’d routinely eat every decent fish that I caught. Now days I’m strictly catch and release - I just get a bad feeling about water quality no matter what lake I’m fishing in. I don’t follow eco stuff as much as I should, but I think it’s sad we can’t trust our lakes anymore.
fuck yeah they did :P
Nonstop curated music for creative work
If you call a steady 1-2%/year "massive".

The real effect has been to stabilize the economy. I guess people who like gold standards don't know their economic history. The 19th century, which is arguably a recognizable modern economy (in the West), was punctuated by panics and strong recessions that made the "Great Depression" look tame. (which itself makes the Great Recession look pretty tame.). Getting of the gold standard was key to fixing that.

I have literally never seen this argument before, and I've been reading economics books for 10 years.

I'm more curious than anything. Please tell me where I can find more.
A good interview with Ken after the paper was retracted: https://stanforddaily.com/2021/10/31/qa-after-1-year-of-inve...
What was the lyric?
With cloud gaming Nintendo might have delayed the giants that are Microsoft and Sony long enough to finally make the gaming hardware power debate moot.
FWIW, I was speaking about the "collective" you. And of course one does not automatically get the value out of anything without using it properly. If you use something other than how it was intended, you will get something other than advertised.

And I also agree that cryptocurrency is still not easy to use, but I'm not sure why it needs to "inherently" solve something (even though it has intrinsic value in certain dimensions). HTTP was inherently made to transfer structured text. No one was hoping it was going to replace the postal service, and yet the majority of the worlds information is transmitted using the protocol.

And just because you couldn't use "HTTP" when it was being first developed by researchers, it still served a purpose for them at the time and gradually became the invisible technology that it is today. Now replace "HTTP" with "cryptocurrency" and "at the time" with "now".

This is exactly what I meant when I said that maybe cryptocurrency wasn't ready for (collective) you.
I thought the dock and such was silly.

Now I don’t think I’ll ever buy a non portable dedicated console again.
https://en.wikipedia.org/wiki/Color_temperature

Color temperatures over 5000 K are called "cool colors" (bluish), while lower color temperatures (2700–3000 K) are called "warm colors" (yellowish). "Warm" in this context is an analogy to radiated heat flux of traditional incandescent lighting rather than temperature. The spectral peak of warm-colored light is closer to infrared, and most natural warm-colored light sources emit significant infrared radiation. The fact that "warm" lighting in this sense actually has a "cooler" color temperature often leads to confusion.
220 V is already in RMS [1] so its just 220V * 16 A = 3.5kW (current is also rms)

Of course, thats truly only correct for a resistive load (but, without knowing much about induction stoves, its probably within 10% - modern power electronics are amazing)

[1] Root Mean Square. Basically the measure needed to make a simply multiplication give you the power. Other ways to measure line voltage are

Amplitude. This would be the A in V(t) = Asin(wt). A = sqrt(Vrms)

Peak to peak. This is 2xA.

They’re all useful ways to thinking of the same thing. If you’re designing insulation you’re designing for A, or peak to peak. If you’re designing a water kettle, you’re interested in Vrms.
> Remember prohibition?

Yes, but I thought the whole point of prohibition (unless you're living in that weird period between 18th amendment and 21st amendment) is that it was a terrible idea, never to be repeated again.

> The minute the fed considers Bitcoin and crypto to be a risk, they'll axe it. Coinbase or not.

This doesn't make sense, you presume that Fed has zero understanding of consequences of their actions.

Fed may consider something to be a risk and yet not act on it. Just because they haven't acted on it, doesn't mean they don't consider it to be a risk.
isn’t it a plant?
The Wii U and Virtual Boy aside, how do they do it? Even the 3DS people came around on. Really wild how much weird shit ('innovation'?) this company can get away with.
Pointing out that the author drew comics for Playboy is also a really weird thing to say

Seemed like an ad hominem attack to me -- here's the passage from the article:

Allman went on to say that Spiegelman had once done artwork for Playboy: “You can look at his history, and we’re letting him do graphics in books for students in elementary school.”
"like you didn't care I don't know why lyrics r&b" was my query
I can't speak for Google but I think the theory they work under is that for some queries the ads are the best results. In other words, the user is more likely to find what they are looking for if those ads are there. There are many signals used for ranking results and the ad auction price is one signal.
I'm not in this world at all, but I have to wonder: is this really a thing? Binary tools, "binary editors, libraries to encode and decode data, parser generators, binary data description languages and frameworks, binary formats and encodings, assemblers, debuggers, reverse engineering suites, and the like."

Don't binary tools find their home more naturally in a larger language/runtime ecosystem, and would be talked about in that context? E.g. you'd get a talk on gdb at a BSD conference. Or Java-specific binary tools at a Java conference. This makes sense too since, for a lot of programmers, including myself, binary tools are "weapons of last resort" in a debug session - and they are typically highly specialized, and we're not comparing different binary tools so much as picking from the (paltry few) available to us.

I'd like to learn something about a part of the programming world that I know little about. I've been getting more and more interested in lower level mutable state, like CPU microcode and UEFI firmware and (I suppose) the contents of HP's iLO little-connected-computer-that-runs-alongside-the-CPU-and-we-should-really-have-a-better-word-for [0].

But then, I mean the premise of the talk is so broad you could conceivably have a talk about Wireshark. Or Java bytecode manipulation libraries and tools. Or even code that does streaming transforms on video in nodejs. "Libraries to encode and decode data" places no limit to the valid subjects of such a talk.

[0] https://isc.sans.edu/diary/Over+20+thousand+servers+have+the...
Why are there two store-and-hold circuits? Is it for smoothing the output waveform?

I was thinking it could be to produce a stereo output using a single chip by alternating between left/right [0]. But the output is summed and as far as I know, the 1/4" jack is mono.

[0] My first CD player, the Sony CDP-101 did this. It only had a single DAC so there was a 11µs delay between left + right channels. While I loved it, any $60 Walmart player has better sound these days.
Better than an algorithm that prioritizes posts based on how much interaction they receive.

The manipulation of a conversation can instead be a democratic process where each participant (even each lurker) gets to decide what comments should be seen first by each new participant. I'm actually really impressed by HN's distributed moderation, the fact that members with more reputation (higher score) get to flag and vouch comments lets HN dodge reddit's curse of having weird power-tripping volunteers with a monopoly on bans.

Conversations need to be manipulated one way or another, I mean maybe 4chan gets by unmoderated, but don't they kick spammers too? So someone has power to shape the conversation, question is how the power is distributed.
You're being a glass-half-empty person. Actually it's worse than that: you're being extremely hyperbolic in your condemnation of this research.

I see health research a giant jigsaw puzzle (on top of other kinds of puzzles) -- and over time, by examining multiple routs of interaction, we start to see the bigger picture. And find out why, for example, certain substances that are harmful (in some aspects, at certain use levels) can also be tolerated or acclimated to over time (because they can be beneficial to other parts of the system). Especially given that this is not just any substance, but one that our species has been using across cultures and since before recorded history.

And when it comes to conditions like Alzheimer's: if we have to turn over a thousand stones, and do a thousand studies like this to get a working compound -- then so be it. It literally is a trillion-dollar question, in both financial and human (suffering) terms. And yet here we are, still groping around different parts of the elephant in the dark.
Hm. From my anecdotal and looking into all this, this does not appear to be the case. I've talked to dozens of Palestinians from or in Gaza. Then add in the likely 100+ that people I know have talked to. Sure 2-300 people is still anecdotal, but if not a single one of them is fighting for what you are claiming, it's hard to believe that is actually true of the great population.

You seem to be talking about shit that Iran stirs up. Hamas strips up, etc. Iran isn't Palestine at all. People who actually seriously care about Hamas' alleged goals, are not a large number of people.

It also isn't as simple as saying "look this person helped with some violent initiative from Gaza linked to Hamas - they must be fighting for pre 1948 land". That's not true any more across the board. Not this amount of time later.

My fantasy idea would have begun 50 years ago. In 1973 latest. There would be some 3rd generation people being born in lands in Sinai this decade now.

Which Palestinians are you thinking of who are still fighting this pre-1948 home thing?

--

> You could just as well say that Jordan is already majority Palestinian

What does this mean? Jordan isn't Palestine.

I have mentioned this multiple times. The Arab World surrounding Israel and Palestine give zero fucks about the Palestinians. They always have. Jordan's govt would rather get $10 than save a Palestinian's life. None of them have done any thing to show any sense of remorse for their repeated stupid pitiful war actions that ended up primarily hurting Palestinians. All the countries have had decades upon decades to do something, any thing. None have. Unless they hurt Palestinians even more (like Egypt). This Jordan example means nothing unless there's some sort of conflation of Arab [in power] across different countries are naturally "bros" of some kind. Which is not the situation.
One of the few HN comments that doesn't need more cowbell.
> Clearly you've never encountered the vibrant and exceptionally large world of Harry Potter fanfiction.

That is the point, it is fanfiction and not books written by giant corporations churning out clones as their main business practice. That makes a huge difference.

> Big companies steal and copy every small business idea or IP with impunity anyway

No they don't. Without these laws this would happen with every new rising startup: A really good guy applies and wants to work for you. First day he gets to see your code he sends it all in an email to his old company, quits and gets a huge bonus from them. The next day that company launches a clone using your codebase, with your branding and they then start to put a lot of people to use the "embrace, extend extinguish" practice where their part is interopable with your part but yours isn't with theirs.

Big companies can't do this today, but if you legalised it then they would do it. Do you see the difference here? And worst is, this is super cheap to do, so big companies could do it for every single startup that gets more than a thousand users, at that point their branding isn't strong enough to protect them from a bigger company taking over their branding entirely. When you search Google for your product the top result would be their perfect clone of it, looking and behaving 100% as it should.

> I've never once heard of a startup successfully suing a gigantic company over IP rights and later replacing that big company off those IP rights

That is because every single big company already knows where the line is and just toes it, they wont steal things in a too blatant manner since then there are no lawyers good enough to save them. If you move the line they will start to get more blatant about it, if you remove it entirely then they will do what I talked about above.
But they show up in the cached google search preview as well. I search for something that doesn't exist, and you get 5 "shopping" sites that have faked URLs and faked product entries for the non-existant product.

Like you see in the cached textlines: "Buy reptilecandy here, low prices!!" or something, and the URL to the site seems legit, trustedstore.com/reptilecandy/ but if you click on it you just get to the shop top page with no reptile candy in sight.
I've had Youtube Premium for as long as I can remember. I subscribed to Google Play Music, and they had a promotion for free Youtube Red with a subscription to GPM. I've kept it continuously since then, for free, and I've never seen an ad. I forget that Youtube even has ads until someone else puts a video on. I've also watched a lot of Youtube. I've seen every RedLetter Media video at least twice. This is all anecdotal of course. Maybe I've just gotten lucky.
Do you regularly wake up extremely groggy and drained? That usually only happens to me if I am awoken mid-REM cycle. Perhaps that's worth investigating for you?
Five takeaways from a stunning US jobs report
> This destroys all your B-cells in your body, right?

If you have DLBCL/FL, all treatments go after B-cells. CAR-T is just better at doing that and nothing else.
I guess I’m not a shape rotator after all.
Those are good points. I should say it's not really ActiveSupport that concerned me the most so much as the possibility of other people on my team monkey patching stuff in a similar way, but with much lower quality code. It's almost like all the common dangers of bad programming exist, plus a bunch more at a lower level.

I totally recognize that it's also a strength of ruby. I really enjoyed working with it. It's super expressive and clear to read. ActiveSupport is all really well documented and designed too, and I'm not trying to criticize it.

After re-reading my comment I'm noticing I was specifically targeting Rails as well. I think if anything Rails does a great job and shows why this is a cool thing about ruby. I think what I should have said is that this aspect of ruby is what I found off-putting and specifically in a context where I'm relying on a vast number of dependencies, coworkers of various skill levels, and shipping code to customers. Does that make more sense? I didn't express what I was thinking very well before.
It's basically a dinosaur. https://en.wikipedia.org/wiki/Cassowary
a good smokeping graph would probably get you some respect with the net eng's, but lord knows if you can ever get to them through customer service.
It certainly matters to the pkexec exploit.
argv is defined to be non-const by the standard.
I would argue governmental domestic disinfo programs violate said right (i.e. Russia or China). They change the heuristics for what is believable by many citizens and thereby effectively make much external information useless. This is a form of control by the government, and in extreme forms is grounds for protests or even anti-government riots.
“Deprioritized” Google Stadia to pivot to “Google Stream” white-label service
The "silicon" in Silicon Valley got its real start with the "Traitorous Eight", who had the audacity to leave an employer and go immediately into direct competition with that employer. Not sure what role state laws played in making it possible.

https://en.wikipedia.org/wiki/Traitorous_eight
Just got my second Switch today.
I swear my joycons miss something like 1% of my button presses.
sysctl ≠ syscall, FWIW
People should really invest effort in creating unique names for their tools. Case in point a popular git gui client is called "fork". As in git fork named after the git command. Doing troubleshoot googles for that software is a frickin nightmare.
thanks for clarifying. That makes a lot more sense than GP's phrasing.
Interesting, I’ve been burned so many times, I always skip any result tagged as an ad. I can’t be the only one.
the only reason I use LinkedIn is the Jobs section