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Chrobin

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Chrobin ,

Well, as the URL says, that’s logistic growth and not exponential growth.

Chrobin ,

Just to add some formality to this, the original commenter might want to look up the shell theorem for classical mechanics and Birkhoff’s theorem for general relativity.

Chrobin ,

Actually a good point, tho. And also a good thought: If there is no special direction, what would be up? And that’s where quantum mechanics gets even weirder: It’s either up or down in the direction you measure.

Chrobin ,

Yeah, quantum mechanics lingo: measurement = interaction

Chrobin ,

But they don’t use Bluetooth.

Chrobin ,

The technical term you’re looking for is “almost all” prime numbers. Not joking btw.

Chrobin ,

I had to derive osmotic pressure for my statistical mechanics exam in my bachelor’s. So in what sense don’t we know?

Chrobin ,

Could someone explain how paying a person not to publicly talk about what you did is illegal? If a company does this, it’s called NDA. Is it because prostitution is illegal in the US?

Chrobin ,

Thank you for the explanation!

Chrobin ,

At least cosmology does use some serious quantum physics, even quantum field theory. Source: took 1 year of theoretical cosmology lectures.

Chrobin ,

They weren’t talking about radioactive decay, electrons are stable. They were talking about electrically charged particles emitting electromagnetic radiation when accelerated. (Circular movement is accelerated, see centripetal force) Since they use energy for this, they would very quickly fall into the nucleus (if I remember correctly, in around 10^-14 s).

Bodies with mass also emit gravitational waves when accelerated, but much less.

Chrobin ,

Pretty sure a court told them to.

Chrobin ,

Gravity isn’t a force tho…

Chrobin ,

Well, firstly, we can quantize gravity pretty easily, it just has unphysical divergences.

But secondly, I think it makes most sense to talk about the current accepted physics because we don’t know how quantum gravity will work.

Chrobin ,

In our current understanding of physics, it’s an effect from the curvature of space and not a force. Quantizing gravity results in unphysical divergences. Whether there will be a way to model gravity as an exchange of particles, we can’t know for sure. So according to our current knowledge, it’s not a force.

Chrobin ,

But the point of general relativity is that a free-floating observer is equivalent to an observer in free space. That means that falling due to gravity, which you call a force, is an unaccelerated movement, i.e. no force.

Chrobin ,

I’m not trying to argue approximations. Physics is just approximations all the way down. But as a physicist, I also love arguing about technicalities, and that’s also kinda the point of science communities for me.

Chrobin ,

Many people are trying to give a definitive answer, and there are good theories, but honestly, it is still very much an open question. There are multiple interpretations and as people tend to do in popular science, some spread their opinion as a fact, but we don’t have one correct answer.

Chrobin ,

For that, you need Hilbert spaces, linear operators on them, a little spectral theory, …

Chrobin ,

It’s afro American sociolect.

Chrobin ,

Obviously, the apartment with the Confederate flag has a swastika inside.

Chrobin ,

Well, except Pokémon. But we don’t talk about Pokémon.

Chrobin ,

Most of the time? Doesn’t it mainly lag when moving to a different region? It also looks really good.

Chrobin ,

Yeah, you’re technically right, but everyone just fully associates Pokémon with Nintendo.

Chrobin ,

There’s also WYGIWYW (“What You Get Is What You Want”) and is primarily used for latex, because you give up some manual control for a (allegedly) better looking result.

Chrobin ,

More precisely: If you repeatedly draw values from a probability distribution and sum them up, the sum tends towards a Gaussian (central limit theorem).

Chrobin ,

Currently, there is basically only one real world application we really know: Factoring numbers into prime factors. And we can’t know for sure whether there will be more even.

Chrobin ,

I am a physicist and truly appreciate the effect of quantum computing on our simulations, but with “real world” I meant proper industrial use. And for that, there are hardly any algorithms known except Shor’s. When the CEO of Deutsche Bank says he will do his bank transactions on a quantum computer, you know the topic is over-hyped.

Edit: A video that explains this by a theoretical physicist working on the foundations of quantum mechanics

Chrobin ,

She might have strong opinions on particle physics and I do take them with a grain of salt, but I don’t see objectively wrong things in there.

Chrobin ,

Are you talking about her video on trans athletes? I don’t remember it being transphobic.

Chrobin ,

Thanks for this productive discourse, not ad hominem at all. You’re welcome to criticize my views and I’m happy to learn. And I am doing my physics masters, so I think I am no complete idiot. But this is also not productive.

Edit: I’m focusing on cosmology, I’m not claiming to be a quantum computing expert. That was just my last state of knowledge and I’m always happy to learn.

Chrobin ,

I don’t think I was talking about this, interesting. Because in the video I mentioned she was fine with trans athletes competing together with cis athletes, which seemed very progressive to me. But I’m happy to be proven wrong.

Chrobin ,

Maybe I just mixed up the fact that proper industrial use is vastly overestimated/overhyped with that there is little use. I will do some research.

Chrobin ,

Isn’t // integer division?

Chrobin ,

You’re right, I did not know that. Thanks!

Chrobin ,

How about If You’re Here by Cornelius?

Chrobin ,

Watch everyone forget that correlation doesn’t equal causation when it confirms their biases.

Chrobin ,

Correction: You’d need to travel with a speed higher than the vacuum speed of light.

Chrobin ,

TOS: The Original Series
TNG: The Next Generation
DS9: Deep Space 9
VOY: Voyager
ENT: Enterprise
DIS: Discovery
PIC: Picard
LD: Lower Decks
SNW: Strange New World

Chrobin ,

This medium you’re talking about is called “aether” and was disproven in 1887.

Chrobin ,

In Japan, sushi is definitely one of the more expensive foods. You can’t really use yesterday’s fish as authentic sushi uses fresh fish which you can’t eat the next day for obvious reasons.

Chrobin ,

But it’s like triple the price of ramen or Yoshinoya - and that’s the cheap sushi. Real sushi isn’t a leftover recipe, it’s an art by real chefs.

Chrobin ,

I recently was in the BMW museum and they actually had a whole section dedicated to their Nazi past and how they want to never do that again. Do with that what you will but at least they’re not shoving it under the carpet.

Chrobin ,

It is Bayerische Motoren Werke. Funnily enough, that’s wrong orthography, it should be Bayerische Motorenwerke, so you have a point.

Chrobin ,

I know that. But we still need to support the companies that do shit we want, so it’s more profitable to do so.

What are some physics-based arguments against hard determinism?

I don’t believe free will is real. I’m not a deep physics person (and relatively bad at math), but with my undergrad understanding of chemistry, classical mechanics, and electromagnetism, it seems most rational that we are creatures entirely controlled by our environments and what we ingest and inhale....

Chrobin ,

CP symmetry has been experimentally measured to be violated. What we still believe is that our world is invariant under CPT symmetry.

Chrobin ,

It’s visibly made in word. That’s enough to be rushed.

Chrobin ,

And it definitely looks it. That is, shitty.

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