Ziggurat
@Ziggurat@jlai.lu
- Comment on If dark matter doesn't emit, absorb, or reflect light, what happens when light hits it? 4 days ago:
Scientists don’t know if dark matter really exists, or if there’s other ways to explain this phenomenon. Another explanation is that there’s no extra matter, but that this is just how gravity behaves in large scales.
I am by no mean an expert, but I When I was a master student, I spent some time exploring the modified gravity rabbithole the most popular being MOND. The big limit is that it’s a ad hoc model to fit galaxy rotation curve, it works pretty well. But it doesn’t work if you try to use it for a cosmological model, and doesn’t explain gravitational lensing. Making it an overall weak hypothesis compared to the good old cold dark matter
The standard cosmological model with dark matter and dark energy (it’s two different objets) is supported by a lot of evidences. Up to now, no alternative theory works at explaining all data we have.
Don’t get me wrong, we may have a massive hole in gravity, and may at a point get the missing piece of data to find it and explain everything without using exotic particles. But as of today, both particle physicists and cosmologists agree that particle physics beyond the standard model provides the most solid candidate for dark matter and that nothing else has a solid backing
- Comment on If dark matter doesn't emit, absorb, or reflect light, what happens when light hits it? 4 days ago:
While I’ve bee away from dark matter physics for a while, we do have a couple of theoretical candidates for dark matter, and data from cosmology and particle accelerator, somehow describing the kind of proporties that a dark matter particle would have.
And it includes a low cross section, meaning that most likely it won’t interact with light (see it as smaller than light as an over simplification). This makes detection pretty hard both in direct and indirect way
- Comment on does anyone else have this impression of gruyere? 2 weeks ago:
Gruyère has a pretty light taste, more something you put for the texture. If you want taste go for some goat, bleu, or Munster (beware that one will make your fridge smell)
- Comment on [deleted] 2 weeks ago:
Pro-tip, invite to a physical date quickly, it would filter out most of scammer, and if you don’t other person will do and the person you had a good chat with will vanish
- Comment on How many people would a generation ship need to have for inbreeding to not be an issue? 4 weeks ago:
If you are strictly controlling genomes and breeding pairs, ignoring monogamy and social norms. You might be able to get away with 100
In a Sci fi context where we have generation ships, I would add frozen sperm/eggs to the equation and even artificial womb. In like a 100kg package you can store a lot of genetic material. That’s pretty fucked up (and a nice writing prompt) but definitely doable.
At this point the question is also cultural what is the minimum amount of person to keep a population able to maintain a large ship over centuries and produce enough food
- Comment on [deleted] 4 weeks ago:
Man tend to be more rationale than woman and wear make-up when needed, so basically when they are on a stage, facing a camera, or at events like larp/concert.
But it’s way more common than you think in every day life
- Comment on What is an industrial product that, if you could purchase as an investment, you know you could find **local** customers ? 5 weeks ago:
CNC machine+ skills+ network
Tons of companies outsource some if not all of their mechanical parts productions, either because it’s not their core business ( but they still need some custom parts made every so and on) or to manage production peaks without paying equipment/workers used 3 months a year
- Comment on Which career to pursue? 1 month ago:
Not sure what’s your question here, you’re a first year student, you’ve never done that physics before. How comfortable do you feel, doing it for the next 5 years?
Physics is a versatile Stem field with applications going from medicine to AI so with a master of physics you’ll find a job. While you may be more generalistic than an electnonic/electrical/software/mechanical engineer you 'll get a good theoretical and experimental foundation covering also these field (which are tools you need to do physics but also applications of physics)
Science/Engineering isn’t a field to make big money If you want to make money, go for a business degree, ypu ll earn more for a more bullshit job.
- Submitted 2 months ago to [deleted] | 75 comments
- Comment on how do school shooters know how to use guns? 2 months ago:
I went to a rural school, and everyone had a “hunters education” class in like 7th grade.
For the non American, how old is it supposed to be, please tell me it’s the last year of high school with 18 yo, and you were in a vocational school not a generic one
- Comment on [deleted] 2 months ago:
From what I get, the name is so bad, that when creating your character you choose to be born as a girl and transition latter so you would-be called Marco. Looks like you knew before being born that the name was bad 😂
- Comment on My brother got arrested for a dime bag. His picture got put up on the jails website. And they advertise. So shouldn't my brother get paid at least a little for providing clicks? 2 months ago:
one more example showing how US standard are incredibly low regarding basic human rights…
- Comment on Is This Social Media? 2 months ago:
I would consider fediverse and forums, including lemmy as a form of social media. So the answer is yes
- Comment on Why is it so common to be interested in true crime when at the same time you're disturbed by it? 2 months ago:
Full story, often quite awful (you never see true crime about a drunk driver, but when a chemistry student uses acid to get rid of his ex gf body it’s get in true crime show), and with a lot of technical and legal details all of that make it interesting provided you have a good narrator
- Comment on [deleted] 2 months ago:
Like… do governments just get to shape the world as they see fit?
This is not new, most likely in history class you’ve heard about Soviet propaganda and saw how Trotsky was removed from photography.
The interesting part is now every stupid ass can forge photograph without complex techniques and a long training. IMO it’s great, people will finally understand that a photo/video is most likely fake.
It will help them to use their critical thinking skills and check the context
- Comment on How would one exit a black hole? 2 months ago:
Which is why it would work with a small black hole, but not with a large one
- Comment on [deleted] 3 months ago:
Don’t make-it a big deal, and your kid won’t make-it a big-deal
- Comment on [deleted] 3 months ago:
That’s pretty high on the scale of toxic parenting,
Tell him that you’re already with someone, and not interested
- Comment on For some reason suicide is illegal. If someone is going or trying to commit suicide and get talked down are they still in trouble or get locked up or sent to a medical facility? 3 months ago:
There is a gray area where assisted suicide/euthanasia isn’t legal. Shall you take 20 or 30 years of jail for helping your loved one to end their suffering or shall legally murderer get away with suspended sentence/probation.
A clear legal context for assisted suicide suicide solves the debate
- Comment on Feeling insecure about going to a 'girlie pop' concert as a 30 year old man, am i overthinking it? 3 months ago:
Enjoy yourself, have fun with your wife, and don’t overhtink-it, your dick won’t fly away
- Comment on How do AI data centers manage to *consume* water, but when I cool my house, my A/C *makes* water? 3 months ago:
This is the complicated part with water consumption, saving water in the Netherlands won’t make rain in Morroco.
However, there is only so many rain water stored in the ground at a given time and brought by the rivers. This water need to be used mostly for agriculture, then human consumption, and finally industry. Once it’s back in the cloud we don’t fully know where it will fall again, let alone if it’s polluted.
Sure it’s a renewable ressource, the problem start when you the water faster than the rate at which it renews, especially during summer. In Europe the problem will be even worse with the global warming. The alpine glacier are disappearing meaning that we’ll loose a major water reserve for summer
- Comment on Whatever happened to the blockchain/smart contract 'revolution' we were told about? 3 months ago:
It’s actively transforming global agriculture. While the USA failed to innovate Canada has integrated blockchain into it’s agricultural sector to facilitate unparalleled traceability.
This example is a nice summary of the issue with block chain. Sure it can be done with block chain.
However, is it really doing it better than SAP or whatever large corporate program used to do it? Is there an ecosystem of thousands of specialised consultant that will tailor a solution for your need? Most managers tends to be conservative with tech, they want a brand they know (Microsoft, SAP) wich can provide a support contract and be sued, and with sales-person wearing a tie. The cryptobros and theirs block chain based startup do not match.
- Comment on Whatever happened to the blockchain/smart contract 'revolution' we were told about? 3 months ago:
- Comment on Why is Fediverse moderation, even more Draconian than Reddit? 3 months ago:
Even slightly right of center will get you banned and ostracized
Sligthly right of center views are more saying that private sector may play a role in healthcare, or that private school are OK. Thinking that children shall not get healthcare or suporting war-crime isn’t slighthly off centered
- Comment on Entrapment 3 months ago:
I thought it was for memes, puns, and AI generated content
- Comment on 3 months ago:
!pathfinder@ttrpg.network or at least the more generic !rpg@ttrpg.network would be specialised enough to know the answer.
As usual, in case of doubt during game, find a ruling which works and look out the answer latter
- Comment on Where are all the successful "red cities"? 3 months ago:
Did anyone else thought about cities with communist mayor when reading about red cities?
- Comment on Ice cream trucks still around? 3 months ago:
What’s outdated about it?
People like ice cream, and with global warming even more, , so a truck strategically parked (at the school exit, in the park, in front of that tourist hot spot) will drag an audience. It may be a bit harder for the ones going from neighborhood to neighbourhood but it’s still a thing. We even have one stopping at my work parking, which is the opportunity for informal discussion with coworkers I see less
- Comment on Why are there so many german communities on Lemmy? 4 months ago:
I guess Germans are rather privacy focused so they might
3rd Reich then east Germany gave Germany a hard lesson about privacy, so indeed they’re very sensitive to that topic
- Comment on How come nobody does anything about North Korea? 4 months ago:
We live in a sad world, western democracy with high standard regarding human right are the exception, not the norm.
So are we gonna start war against every dictatorship? Look at the results in Afghanistan instead of freeing them, they now rank worse than North Korea in the economist democracy index not only they got a 20 year long war, but in the end stayed one one of the worst dictatorship in the planet, not really a success