sushibowl @ sushibowl @feddit.nl

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Hydrogen is actually technically very light. Just 1kg (about 2lbs) is about the equivalent of the battery in a lot of EVs. However the equipment to convert that energy into motion at the wheels tends to be quite heavy and expensive.

More than that, the storage tanks required to store an effective amount of hydrogen are insanely heavy and inefficient. A full tank might be only 6% hydrogen by weight, the rest being the weight of the tank itself.

The tanks are kept under extremely high pressures to achieve acceptable storage density, so safety is a concern as well. Unless this problem is solved I don't see fuel cells replacing batteries in transportation.

the Japanese manufacturers (Toyota/etc) seem to think it's the right way to go.

A big factor in this is that Japan's overall energy transition strategy is heavily focused on hydrogen, and has been since the 1970s. Back then hydrogen was considered one of the promising alternatives alongside biofuel and battery electric vehicles. Today battery electric has taken a clear lead and fuel cells are nowhere close, but Japanese industry is already heavily invested in hydrogen tech (and receives substantial government subsidy).

There is some potential for hydrogen still. It's probably the only feasible means of decarbonising heavy industries such as steel production. It's a potential option for grid-scale energy storage, given that it's fairly easily produced using surplus renewable energy.

They do not require any online connection. AACS has some ability to revoke media player keys, but it does so by encrypting future releases in such a way that the revoked player can not decrypt them (how this works technically is a bit complicated).

So if they decide to revoke your player, it can still play every Blu-ray disc manufactured before the revokation went into effect.

He paid around $20 billion cash (by selling Tesla stock) and loaned another 6.25 billion personally (loan secured by more Tesla stock). The rest was funded by various bank loans that are now owed by Twitter itself.

One of the neat tricks you can do when you're wealthy is loan billions of dollars to buy a company, then you put those loans in the name of the company you just bought, so you don't have any personal risk. The reason he still needed to pony up $26 billion in cash is because banks thought it was too risky to loan the full amount. They might now regret loaning even this much, Twitter has a substantial debt burden and I understand ad revenues aren't doing great.

Obviously, since the company is private now we don't get as much insight into financials.

Email is kind of an oligopoly though, if you're not one of the big guys it can get pretty frustrating to run an email server. Even if you do everything right, sometimes you just get randomly blacklisted anyway, you're at the mercy of the big email providers.

There are several advantages to not having them: without all the extra parts needed to support these features you can make the phone thinner (thickness is traditionally a key marketing point for smartphones) and cheaper to make.

Additionally, it seems that a lot of people no longer need these features, making them prime candidates for exclusion: Bluetooth headphones have become very common, internal storages have become large enough, and people buy a new phone often enough nowadays that battery wear is not as much of an issue.

Of course, if you are one of the people who still do want these features you're pretty much out of luck. Which sucks.

Shin Ramyun black is a superior instant noodle IMO. Though personally I really like Samyang buldak hot chicken noodle.

I like to add a soft boiled egg and some sliced spring onion.

This is called a tray bake, and it's great. I recommend chucking some (chopped) vegetables in with it: tomatoes on the vine, carrots, broccoli, asparagus, Brussel sprouts, cauliflower, onion, garlic... Limitless possibilities.

You can also do this with salmon (gotta be a bit more careful with timing on that). Or bacon. Or do sweet potato, or pumpkin.

It is occasionally amusing to go to Wikipedia's manual of style "words to watch" page:

This page in a nutshell: Be cautious with expressions that may introduce bias, lack precision, or include offensive terms. Use clear, direct language. Let facts alone do the talking.

Then look at some news headlines and see how many of them violate the rules on that page. Headlines are shit.

What he means is, if you want to download the document from ISO that describes the standard, you have to pay a fee. Here's their store page: click.

It's about 190 USD for a 38 page document describing the rules of the standard. There's another document with extensions for a similar price. Quite pricey for a PDF file obviously, and the RFC is free to download.

On the other hand, no one in the history of time has gone "hmm, I don't know how ISO-8601 works, let me go buy this document from the ISO store to figure it out." Most people just call datetime.isoformat() or whatever their library function is called.

Nah, it's just what's easily available where they live. Bamboo makes up 99% of their diet in the wild, but they will eat eggs, fish, meat, or other veggies if they stumble upon it.

Koalas eat mainly eucalyptus leaves. They do have a reputation for being picky eaters. I believe out of the hundreds of different Eucalyptus species they prefer to eat only a few dozen species. But they can also be found on other tree species occasionally.

I've seen Reddit posts that mention this idea that a Koala is too stupid to recognise leaves that are on the ground. I haven't found any reputable sources for the claim though.

Sorry I wrote rods once when i clearly meant cones. You are correct that rods do not detect color of course, thank you for noticing the error.

Here is a pretty nice article on CVD that explores a lot of the genetics. It even mentions the enchroma (not by name of course) in the management section:

Another strategy—the use of so-called ‘notch filters’ to artificially separate the effective peak sensitivities of the expressed X-chromosome-coded photopigments in red-green anomalous trichromats—has yet to be explored fully.

This might be an older article as i believe some research on notch filters has since been done. As far as I know, there is some limited evidence that they improve performance specifically in colour discrimination tasks. There's usually no evidence that they improve overall colour perception.

Not all cases of CVD are of this kind either (although it's the most common cause), if you have monochromacy, dichromacy, or generally anything other than anomalous trichromacy, these glasses will do nothing. There are even rare cases where the eye can see colour perfectly fine and the problem is in the brain, although this is usually classified as some sort of aphasia and is not strictly speaking colour blindness.

This is accurate. Most likely you have a mild form of CVD, where some of the cones in your eyes overlap in their light frequency response. This makes it hard to distinguish colours containing that frequency range, because multiple cones respond to them when only one should.

The glasses actually work by completely blocking out the light in those overlapping frequency ranges. This will help to avoid the confusion between the cones, and could help you better distinguish colours containing components in those ranges. That's also why the glasses have this pink hue in the video. By removing some colours from white light, the remaining ones combine into pink-ish light.

Obviously, you cannot restore normal colour vision by blocking out even more colours. The marketing from enchroma is pretty scummy.

The number varies a little bit (I've seen estimates 600-1200 kWh) but this is well within an order of magnitude of being correct. It's the nature of the competitive mining network and the proof of work system: if you can spend more computing power (i.e. energy) than everyone else there are lucrative mining rewards to be had. At the same time adding more computing power to the network doesn't add more transaction processing power, because mining difficulty is constantly adjusted to keep the speed more or less constant.

This naturally leads to exorbitant power consumption per transaction. Note that most of this power is not being purchased at EU exchange prices (mining naturally moves to where electricity can be had for cheap to maximize profits).

It's pretty common even in academic literature to treat implied multiplication as having higher precedence than explicit multiplication/division. Otherwise an expression like 1 / 2n would have to be interpreted as (1 / 2) * n rather than the more natural 1 / (2 * n).

A lot of this bullshit can be avoided with better notation systems, but calculators tend to be limited in what you can write, so meh. Unless you want to mislead people for the memes, just put parentheses around things.

I don't know if it makes any sense to assign blame here to another party than Sony. As a customer who bought a license to watch these shows, that's the company that you have an arrangement with. It seems that their licensing arrangements with Warner Brothers were limited time, and either WB isn't inclined to renew them or is asking more than Sony is willing to cough up.

Probably a combination of both if I had to guess. WB is seeking to maximise the value of their own _HBO Max streaming platform, so they want the content to be exclusive and not license it out to others. At the same time Sony is probably not excited to keep spending cash every few years just to keep content available to customers, they're not making any additional money from that.

So the end result is the current situation. Obviously customers agreed to whatever terms Sony put in their EULA at the time so I'm sure it's legally covered and whatever, but it seems pretty scummy and misleading nonetheless. Like, if they were honest on the purchase screen and said "you can pay $20 for the right to watch this season of mythbusters, but any time we like we can take it away from you again and there's nothing you can do," how many people would have bought that? But effectively that is what people bought, they just weren't aware.

Any other feline species probably contributes insignificant numbers compared to Felis Catus.

Still, would suck to be the Scotsman who gets matched up with 113 housecats and 1 tiger.

Firefox has the same problem with V3, it has nothing to do with the browser, adblocker V2 will stop working, because are the advertising companies wich will use V3 scripts.

What the hell are you talking about? This has nothing to do with what advertising companies do.

The main reason adblockers don't like manifest V3 is that the webRequest API is gone. The proposed replacement, declarativeNetRequest, does not have the same functionality.

Why did people ever think that was going to work I don't know. It never even worked in No Man's Sky, the reason people consider that game good now has nothing to do with the procedural generation.

Not really no. Special relativity explains the relationship between space and time. General relativity expands on this to account for gravitation.

One of the postulates (i.e. assumptions) of relativity is that the speed of light in vacuum is the same for all observers. But the theory doesn't actually require any particular value for c, it only needs it to be constant. And it doesn't explain the behavior of light in a medium at all.

In fact, relativity doesn't explain the mechanism by which light interacts at all, that is the domain of Quantum Electro Dynamics.