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lemming

@ lemming @sh.itjust.works

Posts
1
Comments
108
Joined
3 yr. ago

  • Confirmed: Uranus Really Is Hotter Than It Has Any Right to Be

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  • The headline is horrible (haven't read the actual article). As I undrstamd the topic, Uranus radiates more heat than previously measured, but still less than our models suggest it should.

  • is homophobia associated with homosexual arousal

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  • Elastic ring that can measure how much it streched.

  • Jupiter

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  • Not quite. It's based on real wavelenths detected, but they might've been arificially assigned colours (although I think the images this is based on sort of correspond to human perception). But the colours are massively adjusted and contrast increased way past the point I would consider reasonable.

  • EVERYBODY IS DOING SOMETHING

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  • It's interesting. I only read a bit so far and it is definitely right sometimes, but I think it often misses the point. For example complaining that the magic system doesn't make sense is silly, since the magic is obviously trying to appear the same as in the original books (where it makes much less sense) while creating an impression that there might be some rules behind it and it being unintuitive and opaque is the whole point, since the rules are hard to find, else they would be found long ago.

  • Use X without an account (if you really want to ig)

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  • Do you know if there's an instance with working RSS that also shows inages from the tweets in the RSS? I couldn't find any for months.

  • Deleted

    Permanently Deleted

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  • Thanks, it honestly didn't occur to me. Cocks have larger tails, best I could come up with was great chick.

  • WhatsApp is getting ads using personal data from Instagram and Facebook

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  • Thanks. It seems to be just whatsapp web in an app form, so I could probaby just go to my browser. But that's still an interesting idea that never ocurred to me on phone.

  • WhatsApp is getting ads using personal data from Instagram and Facebook

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  • Is there, by any chance, an alternative client?

  • Gen X and millennials three times more likely to be diagnosed with appendix cancer than their parents, study finds

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  • Could also be better diagnostics. A lot of diseases are becoming much more common just because we can recognise them more easily.

  • Wizardry

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  • I think Ra has a magic casting system that is a programming language.

  • Is that bad?

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  • Yes. But if you have many complaints from MANY MANY users, it may not mean anything serious, it could still mean a very small fraction have problems. Absolute number means very little without context. That's the purpose of the previous comment. Please note how it doesn't say anything about qualities of Windows.

  • xkcd #3095: Archaea

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  • But there are eukayotic parasites. They are even closer to us. This on its own is not an explanation.

  • ELI5: Why does time slow down for something as it approaches the speed of light but then are suddenly fast when they are the speed of light or faster?

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  • I think you're probably misremebering what you read, so let's first set it right.

    The time always depends on the observer. If you're going at the speed close to the speed of light (let's say 0.99c, that is 99% of the speed of light), the time will slow down for you from the point of view of others who aren't moving. If you go this fast, it will look like you were slowed down to the others. You yourself will feel normal and everyone else will look sped up. This effect is the larger the closer to the speed of light you go. We'll get to the speed of light and faster in a minute.

    If you went to the moon and back at 0.99c, to everyone on earth, it will look like it took you just a tiny bit less timw then it would take light, I think 2.5 seconds or so. To you, it would feel much faster, I didn't calculate it but let's say 0.1 second. There's no way you would come back to distant future of Earth after a single trip to the moon.

    You could come back to the distant future if you went much further. If you spent a year at 0.99c, much more time would pass on earth. If you kept looking, you would spend a year watching earth at fast forward. In the meantime, earthlings will spend many years wathing you slowed down from their point of view. For you it would feel like a year, for Earth, it would feel like many years, because the flow of time depends on your speed and there is no universal reference time.

    Now let's get to the speed of light. First of all, it is impossible for anything with mass to reach the speed of light. As you approach speed of light, the amount of energy needed to accelerate increases and you need infinite amount of energy to reach the speed of light, which you obviously can't have. Massless particles, like photons, that is light, move at the speed of light. Hence speed of light :-) It is said that they don't percieve time, they are sort of simultaneously everywhere along their path from their point of view. Easy to say, hard to imagine. But no dip is happening. From the point of view of someone not moving, just standing on Earth, if you are speeding up, you appear to be moving slower and slower and if you reached the speed of light, you would appear to stop moving altogether. From your point of view, you would feel normal, but Earth would be more and more sped up and then I guess you would be everywhere at once and time would stop to have a meaning? BTW, observing stuff would in fact be problematic, since you need light for that and getting light at the speed of light doesn't quite work and there's a bunch of interesting other complications even before that.

    To get to speeds faster than speed of light is even more impossible. But there is a theoretical framework for particles faster than speed of light called tachyons. In a way, they are an opposite. They have to be faster, never can reach the speed of light and the closer to the speed of light they are (and therefore the slower they are), the more energy they need to slow down further. They are said to move backwards in time. They have not been showed to exist (once it looked like they might, but it was a technical issue with measurements). I know very little about them.

  • Why the Definition of species should be 2 creatures that can produce fertile offspring.

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  • I'm afraid that you don't quite see all the complexity involved. I'm not saying I see all of it, but I can see there is more to it than you think.

    What about bacteria? Not only don't they don't often use sexual reproduction, so they don't need a pair of parents to produce offsprings, but they exchange plasmids and therefore DNA with little regard for species.

    Plants are a complete mess of genome duplication, aneuploidy and whatnot. In these aspects, they are sort of scary to me.

    Also, what about formation of a new species? Do you think there is a clean-cut time when they stop producing offspring? Also, what exactly do you mean by fertile? Where do you get a partner to test if the offspring is fertile?

    These are just a few problems that came to my mind right away. I'm sure there's loads more. I'm afraid that the notion of well organised, easy to categorise world just doesn't match the real world. Species are more or less a continuum. Incidentally, so is life. We have no good definition fornlife either. Just use whatever definition is useful at the moment and don't forget to specify it when necessary.

  • How do I identify predatory journals?

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  • Hasn't Beal's list been taken down quite a while ago? I remember making a copy of it before they removed it. It was a great source, but sometimes it needed some context. I think all of Frontiers in ended up on the list for reasons, but their review process was mostly alright, for example. It was this kind of lack of clearly definedrules and explanations that let them to taking the list down. Is it back up?

  • Which EU countries have reached their thresholds for the ECI petition to ban conversion therapy?

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  • I'm wondering about coverage. How much was it talked about in the public? How much was it covered by media? What's your experience from France and other countries that reached the threshold and from countries that remained far from it? People can't sign something they never heard about.

  • Somebody make this

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  • There is also undewater hockey. Two water hockeys to offset the lack of fire hockey?

  • It's Monday :3

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  • Nice sheets! Nice cat too, of course.

  • How are there cases of people deliberately staying awake for so long they died? Wouldn't you just automatically pass out and sleep long before you got to that point?

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  • I read about such experiments some time ago. If I remember correctly, after being forced awake for some time, some people stopped being tired and had to be forced to sleep. I also believe there are individual differences, so while some people in the discussion describe their own interesting experience, keep in mind that others might react differently.