skysight-inc/HackerNews huggingface dataset:
> Has the double slit experiment been done and verified in a vacuum?

99.9999999% sure yes, but I can't find a source with the actual experiment. The versions with electrons are made in vacuum, but I'm not sure they use the double slit pattern.

You can reproduce the experiment with light in air. It's expected that you will get the same result in vacuum. An actual experiment is nice, but the setup in more complicated, so it's not done in a normal lab class.

It should be easy to setup for someone with access to a vacuum pump, and some free time (1 week top). It would be nice to see how the lines move when the refraction index of the air that is almost 1 changes to the refraction index of vacuum that is exactly 1.

It's hard to convince someone of doing the actual experiment, because it looks a lot of work without an insightful result. Perhaps you are lucky and someone already did this. I guess this is the case, but I can't find it. Perhaps you can convince someone like Cody of "Cody's lab" to make the experiment and upload a video.
It's obvious when you think about it. Artists get paid per stream but users only pay per month. When someone listens to more streams than they have paid for, the money has to be taken from someone who has listened to less streams than they paid for.
I upvoted this not because I agree but because it's a common question. It's not against federal law at all, but some cities have started banning cashless businesses. Oh, and Massachusetts. E.g. https://arstechnica.com/tech-policy/2019/03/sorry-amazon-phi...
The Pipe Holds Them All Together
I'd love to see more around helping people choose hobbies. My problem is finding ones I can sink my teeth into and be passionate about. But coming across those is finding a needle in a haystack.
Most LPs come with download cards these days anyways. At least about 50% of new LPs I buy, anyways.
>I suspect the biggest difference between these companies is not talent or vision, but sens of urgency

Well that and the SABRE engine is a completely new design and SpaceXs engines are based on engines created in the 1960s and refined since then.

Its comparing apples and oranges.
If the movies were out of copyright, people would be able to freely use existing copies - DVDs, physical film not in Disney's physical control, etc.
The two largest grocery chains in Switzerland are both cooperatives (they together represent ~70% of retail):

- Coop (that's the name) has https://en.wikipedia.org/wiki/Coop_(Switzerland)

- Migros https://en.wikipedia.org/wiki/Migros
At the beginning Jobs introduces a few websites: NeXT, Microsoft, Intel. Then, at 1:59 he mentions a fourth one but I can't understand what he says and there are no subtitles. Could anyone understand what website he mentioned?

EDIT: I think it is Toy Story. I thought this was much later but apparently it fits the time frame. Unfortunately Wayback Machine doesn't have: 302 redirecting to Disney:-(
PHP-FPM + Nginx is the standard approach for OwnCloud & NextCloud. I'm sure they're not the only stacks that use that approach.
Wouldn't that depend on whether you take a human-centric or bio-centric view of the world's population? The loss of genetic data over this last century might be something we don't recognise the full implications of yet.
It's a bit more complicated than just "upload all my stored procedures" in practice. I think we need a version control / deployment system that is designed for databases to make this work.

We want it to regard the database as the source of truth, and understand that while you can blow away a development database, you can't do that to prod.

We want it to be able to track which clients are using which stored procedures so it can prohibit dropping stored procedures that are in use. Ideally, when those clients upgrade to newer versions, it's then able to drop them automatically.

Stored procedures can bind to tables, views, types, etc. so it needs to be able to recommend migration plans.
Taking the package and claiming a refund is obviously fraud but it sounds like the business was also not properly safeguarding the packages.

Why not keep them under the counter?
How to Combat Trump’s Twisted Nationalism
Yeah, I'm curious if the number of "batteries" already connected to the grid could mitigate this quite a bit. For example, large industrial freezers (or perhaps even "smart" home freezers) could take their temp extra low during the day so they wouldn't need to use power during the evening.

Also, with the current discrepancy in electricity costs between the day and evening, seems like this could make something like Tesla's Powerwall much more price competitive if it meant you only had to use the grid during the cheapest times.
No. We hire people who are working in offices in their current jobs, but I usually discuss remote work during the interview process to make sure they understand what they are getting into.
Maybe it depends on where you are making your purchases, but I've rarely seen a $50 bill unwelcome at retail in Michigan, Pennsylvania, New Jersey, or the office park neighbourhoods of California.
Awful reporting about a bad idea.

The actual proposal isn't to irradiate nuclear waste with lasers. The idea is to use the laser to accelerate protons, irradiate heavy nuclei with those protons to get them to either fission or at least emit neutrons, irradiate long-lived waste with those neutrons to transmute it. It's possible in theory.

In practice, it's nonsense. These accelerators have low efficiency and produce few neutrons. This makes the process slow and inefficient. So inefficient in fact, that all practical (for small values of "practical") proposals are actually for sub-critical reactors that use nuclear fission to amplify the neutron output.

But then the idiocy becomes clear: instead of a sub-critical reactor and an unbelievably expensive accelerator, you might as well build a critical reactor, recycle the actinides directly and maybe transmute the fission products.

In other words, this is a guy who just likes particle accelerators. He has a solution, now he's looking for a suitable problem.
This extension works on mobile firefox
1969 letter by Warren Buffett on the closing of his partnership [pdf]
Deploying Your Angular App to IBM Cloud
Please. The poster is literally planning to start a business but has no idea what business he wants to start, so he comes here for free ideas from other people. If I had a problem I needed solved, a problem that I presume other people also needed to solve, then I could turn that into a business whether or not I had the skills to solve the problem. So same answer.
In the Netherlands some/many people work 40 hours on a 36 hour contract, resulting in almost 10 weeks of paid vacation as well. It's worth a lot to me.
I propose a different approach: the copyright owner can retain copyright indefinitely, as long as they make the work available, in a reasonably practical way, and for a reasonable price. I can't tell you exactly what reasonable means here, but it isn't beyond the wit of man to make some sensible rules about that.

So, as soon as they lock it away like this, they lose any rights to it. Whereas if they keep making it available, they can keep those rights forever!
Not the commenter but I had the same experience changing from debit card to credit card. Even though I always paid off everything at the end of the month, I'm now buying more things simply because it's so easy.

Before I only had smaller amounts on my debit card, so if I wanted to buy stuff online I had to first move money from another account. This extra step made me more conscious of my spending and I would imagine starting to use cash would have a similar effect.
Wouldn't EV increase electricity demand in the evenings when people get home and plug in their cars?
Erm? I'm saying that I wouldn't want to spend my personal time with someone who supports that, that's my own business, but that I wouldn't mind working with them, because that's a professional environment.

The Googlers are the ones who'd do neither, so what do you think of them?
https://orbitalindex.com/feed.xml

There's even an hidden RSS feed.
Somehow I don't understand how you say Syncthing's disadvantage in comparison is that it's a P2P system[1], but at the same time your website says duple doesn't need a server.

Maybe I've misunderstood, but this sounds just like Syncthing with an always-on client - except for the file versioning, that sounds like an interesting feature to me.

[1] https://blog.duple.io/what-is-the-point-of-duple/
(At a fortune 500 company)

I negotiated 20 days vacation starting (or one month). Plus, 5 days carry over. At 5 years that number increases to 30 days (or six weeks).

I also get 5 sick days and get 8 weeks paternity leave.

Honestly, I take probably 2 months off a year in two week increments.
I wasn't really trying to make a counterargument against the legal case, just that it's more complicated than that IMO.

For one thing, the idea that they knew it would cause climate change seems highly suspect to me.
There have been countless instances of criminal witnesses giving false testimony for consideration.

I recognize that in some cases it might be the only way to convict, but the fact that so many people have spent decades in prison only to later be exonerated inspires little confidence in this practice.

Rape and murder convictions get all the attention and resources, but certainly there are countless lesser crimes with the same problem.
30 days here in brazil per year. No theoretical limits on sick days as long as you're really sick, but after 15 days in the hospital, the government pays you instead of your company (at a progressively reduced scale, of course, if you make lots of money, it is just fair that the government should need to help you less than someone who makes minimum wages).
Well said,if only someone throwed money at purism like they did with signal.
Sort of, but also not really because many merchants aren't going to give him a discount for paying in cash.
They created the “popular culture” authors of GPL software didn’t whine about Microsoft not open sourcing Windows, they created their own software.

Authors of GPL software have the right to distribute their software as they please...just as Disney does.
A few thoughts here:

- To support that you'd have to show what the myths would look like today without Disney's involvement. Just as likely, they would have been forgotten.

- This isn't a zero sum thing. If you prefer a different telling of a classic story, spread it! No one's stopping you.

- I'm also not buying that the myths existed in some ideal state in the past that we've now fallen from. Stories always evolve.
Simplify: move code into database functions (2015)
A very dangerous device. I suppose you have heard about that irresponsible experiment conducted in 1986 where they simply turned off all cooling to a reactor? Remember what happened?

No, not Chernobyl. I'm talking about EBR-II, a fast reactor. Nothing happened. That's how dangerous the device is!
Moved by Fire: History’s Promethean Moment (2014)
Between the hash of the canvas fingerprint, and the hash of the webgl fingerprint, unique identification seems inescapable. The reason I don't run additional plugins is because (at least conceptually) the plugin presence itself would be identifying. Given you only need a few relatively low entropy data points (or one or more highly diverse ones) for a huge likelihood of linking a given browser between sites, identifying the presence of any identifiable plugins at all should be sufficient with another factor to ID someone.

If I were running 3rd party javascript in multiple places, I could build a pretty unique personal profile of someone. If I were looking for technical people using Tor, even moreso.

I'm not in ad tech, so am naive to this. The biggest myth on the internet is that nobody actually cares enough to watch what you in particular are doing, when in fact, this changes from nothing to almost total prediction of consumer and political behaviour as soon as someone at a platform company becomes interested.
Just because they no longer show you personalised ads doesn't mean they have stopped tracking you...
That's not really solveable.

Their focus has been okay... the foss os stack, the gpu driver the apps... even if they fail other projects can pick these up.

It's just very difficult to get to the point you have enough pieces in good shape for a minimal usable set of functionality in 2019. A month or so ago on a devkit, the browser was crashy and juddery scrolling, not janky but going away to think on things for a bit, failing to update any more etc.

They're kind of responsible for all the pieces in the stack, unlike a normal phone company who get OOT kernel and drivers and gpu pieces handed to them all good by the soc vendor. if they can hold out and keep their nerve, it shows signs it will get there. But maybe in 2-5 years for the software imho.
"Safari’s “don’t track me” features are turned on as the factory setting."
To be fair I saw it at a Banksy exhibition where Picasso was crossed out and replaced with Banksy.
No.

Cash is cheap. Losses were around 0.1% and costs were <1% when I did retail eons ago. Might be higher in risky environments due to insurance, worker’s compensation, etc.
>the uniqueness of the screen size

privacy.resistfingerprinting.letterboxing=true on firefox
Azure, VNET and Subnet Deployment
Nothing on the homepage of the NY Times today, above or below the fold. NY Times and other outlets did report on it, as you show in your links, but attention has lapsed. It feels like it deserves more focus as it could be a harbinger of more widespread unrest.
It seems like there are dozens of massive anti-government protests all over the world right now.
The author of that software has the right to distribute software as they please because of copyright law. The government/copyright protects creators and allows them to dictate terms of distribution just like it protects Disney.
I got on board the js train as a young developer just at the right time, when the term AJAX was something of a buzzword. Now my fellow developers give me dirty looks when I suggest our largely static site can do without redux, or that someone would conceive of building a simple accordion component in anything less than React.
Samizdat: A JavaScript library implementing Web censorship circumvention
California has time of use rates (relatively new and uncommon). And we're beginning to see deep discounts in the middle of the day consistent with the solar. So people may strategically charge during the day. If it's a commuter car on a reasonable commute and you've got 300 miles of range, it's feasible to wait till midday.

You can see the power supply / consumption at http://www.caiso.com/TodaysOutlook/Pages/supply.aspx
If the funds from said 2011 account closures went to BTC purchases, this person may very well not need a salary!
Take a look at https://en.wikipedia.org/wiki/Duane's_hypothesis

It's not hidden by a conspiracy, the problem is that a few (10?) year later the result of Duane was explained as an special case of the general theory that use quantum mechanics and/or the Fourier transform. So the result is now just an exercise, that is explained without naming the (or perhaps with the name of the author, but nobody remember him after the exercise has finished).
Nature does that all the time though.

It would seem to me that the only thing for humans to do is to look at it from a human-centric view which would naturally involve some sort of bio-centric view.

I for one is not ready to have a bio-centric view if it means I can't provide my kids with all the things that fossil fuels have provided and keep providing for them.
Here in Brazil is legal for companies to charge a bit less for products if you pay in cash, because they don't have to pay 5% of the transaction for a bank when you're paying in cash.

Banks fought heavily against this law, of course.
I really don't understand this either. I feel like once upon a time email clients used to go so far as to show you the full header by default; but UI trends made it important to hide anything too technical from the end user. It seems like a total dismissal of function for the sake of form. Especially since the uninterested just scroll a little to get past the techno-babble. I think having the header right there was good, it reminded people that email wasn't magic, there was understandable technology at work, and you could easily see what was going on if you cared to look.
True, but I kinda glad AWS doesn't have a monopoly vendor lockin on the US Gov and I am glad the alternative was not Google. With some of Trump's ridiculous orders like this one,I think they'll say "yes" at first and ignore his ordet knowing they can find an excuse if he follows up on the execution.
Disney's legal right is not in dispute. A morally equivalence is the matter disputed. You can only hope to equivocate the two by abstracting away "minor" matters like the vastly different power dynamics involved, or the nature of terms of the licenses in question.

>authors of GPL software didn’t whine about Microsoft not open sourcing Windows

We both know that's not true, but it's also not relevant.
> Unless your primary goal was to kill the industry, and never really had the victims' best interests in mind at all.

Taking a long view, one could argue that there will be less victims overall. This isn't to say that I'm in favor of making any drug illegal.
I’m using direct observation and interaction with people in my city. Bayesian inference based upon a sizable sample size across many years? If you have a source of immigration status of Spanish radio listeners by US metropolitan area, it would be an interesting number. Someone has those numbers using more quantifiable methods than my sampling technique.
PG&E Outage Map uses elasticbeanstalk and returns 4.6MB JSON response
I (work at HeadSpin) did some analysis of PG&E Web Browser performance on HeadSpin using real mobile devices and found the following API call to be unresponsive or very slow. When the API succeeds, the response was 4.6MB JSON.
http://outages-prod.elasticbeanstalk.com/cweb/outages/getOutagesRegions?regionType=city&expand=true&ts=1572194037

HeadSpin Mobile Performance Session
https://ui-dev.headspin.io/sessions/7f841f6d-f8d7-11e9-9b52-021637a61100/waterfall

Linkedin Post that I did with screenshots:
https://www.linkedin.com/posts/wmaiouiru_hello-pacific-gas-and-electric-company-we-activity-6594269696542023680-_AbY
> the Bitcoin-denominated price of your services (just to use an example) rise and fall by 400% in a year

Yeah its a bad example because thats not whats happening at all. Criticisms are possible but yours are so far off that I guess these are called weak strawman arguments? I don't think this was intentional as its seems more like a precompiled argument that isn't really a response to this situation so I will tell you my experience with international vendors:

When legal contracts are executed a payment method and pricing index is determined. The payment itself does not take a year and there is usually no catalog of goods and services that are "bitcoin-denominated", for our agreements. When the actual payment occurs we use the agreed upon index to use the dollar price, paid in crypto and this takes a few seconds to execute and even in the volatile crypto markets usually nothing is happening in this time frame.

The cryptos typically involve:

Bitcoin most frequently using Tradeblock's XBX index, or CME's index, or Coinmarketcap

Ethereum most frequently using Coinmarketcap, and lately Tradeblock's ETX index

random token that one of us has large consolidated ownership of

stablecoin like DAI, USDC, Tether

This is conceptually no different than any legal contract that use shares for payment. You get a glimpse of this common transaction method when companies are acquired for "cash and stock". For the recipient, it is all about the tolerance of liquidity.

There is a curve of liquidity for different asset classes, with US treasuries and non interest bearing dollars being the most liquid on the planet, and a different velocity of liquidity needs for recipients.

In a different use case that uses stablecoins there are no price fluctuations and no index price negotiations involved.

Its been more convenient for some of our non-US businesses because it is difficult for banks to open bank accounts when the beneficial signers are Americans. This is due to FATCA and the high compliance burden for non-US banks, as well as FBAR filings for the US person. But the whole concept of bank accounts have been leapfrogged and international commerce continues unabated.
> The Enterprise JavaBeans architecture defines six distinct roles in the application development and deployment life cycle. Each EJB Role may be performed by a different party. The EJB architecture specifies the contracts that ensure that the product of each EJB Role is compatible with the product of the other EJB architecture Roles. The EJB specification focuses on those contracts that are required to support the development and deployment of ISV-written enterprise Beans.

-- Enterprise JavaBeans™ Specification, v1.1, 12/17/1999 [1]

[1] http://index-of.es/Java/Enterprise%20JavaBeans%20Specificati...
Ask HN: Need Advice for our Landing Page
Hello HN

We have created a landing page to test customer interest in our product idea and to offer early invites. Now, we are wondering what are some engaging and delightful alternatives to a bland email thanking the user for signing up.

Thanks, eagerly waiting for your responses.
There's already even a mechanism for what you want -- commercial-only zones (yellow curb).

One downside is they are typically all day long. A reasonable extension would be to expand them with more restrictive zones: deliveries only between 10-12 and 2-4 for most neighborhoods (there's no perfect time but a fixed window would help people plan). For neighborhoods with doormen: 4-6 AM, 7-10 pm (with a doorman, 4AM isn't a gift to package thieves). TCP cars in residential yellow curb: only 6-10 AM. etc.
Why are you not running php-fpm with Apache is a more pressing question IMO.
No one thinks Jobs or Musk comes up with all the ideas, or 'takes credit' for others work.

They are the figureheads of their respective companies. And just as the engineer builds the product, their job is to sell it. You'd be lucky to work for a company with people at the top as persuasive as Jobs or Musk.
My grandfather owned bars and would fire any honest bartender. His philosophy was that a bartender who wasn’t stealing was smarter than he was.
A death penalty for a corporation would mean that the company would lose its license to do business. It used to be done regularly during the 19th century.

https://www.commondreams.org/views/2019/01/08/its-time-bring...
In my perspective that is a good sign -- they are constantly trying new ways to grow, and dynamically reallocating their resources to markets where the product features gain traction.

IMHO it's unrealistic to expect long-term commitment for maintenance / compatibility from ${ANY} new software, unless there's a 5-year enterprise contract with a SLA. Maintenance is difficult work, and only rewarding if the software provides real-world usefulness.
My experience with many different companies for over a decade is very different. Most of the companies I worked with were cut-throat and treated everyone as disposable; even their top talent.
This is the biggest reason I keep cash around.

Also, I travel on business frequently, I have my wallet and a passport wallet, and I keep some cash in each - in the passport wallet enough to get a cab out of the airport to a hotel, where presumably I can garner a room using my rewards points or have my company wire me money.
It's not a few bits of plastic.

It was the difference between whether my son who was born 10 weeks to early would both survive and be a normal kid or risk not survive and whether he would become normal.
Probably start up business or popups who might not qualify for traditional banking or don't wasn't to go through the hoops.