191–200 of 204 posts
Quick question: How close is this visualization to what a real black hole actually looks like in real life? I’m planning to show this to my daughter, so I'd love to tell her a bit of the science behind it! Super cool project!
Earlier quoted context omitted.
Running a simulation in a browser is not going to be a complete representation of reality. To think that is possible is really weird. So really, what is happening, we are arguing over the 'Title'?
I've done this as have many other people, its absolutely possible and there are good sims floating around. The OPs simulation is just presenting itself as more than what it is
Because I think we would really be arguing about, what level of reality can be calculated in a browser. Sure, a simulation can be done in a browser. But that could be anything from a thermostat with a single simple equation, to modeling all of the air flow thermo-fluid dynamics in a house down to millimeters volumes. There are limits. And I guess if using WASM browsers have gotten a lot more capable. It would come down to what fidelity we are saying is 'reality'.
Earlier quoted context omitted.
>I don't see "simplified" as being opposite to "accurate". Is it accurate to model a cow as a sphere?
To describe cow's gravity? Pretty much so. Then, for visualization and even for many biological purposes, it's accurate enough to mode the cow as a bunch of organs with known processes happening in them. But that's still far from atoms and quarks that constitute the cow.
Either way, no layperson (to whom this black hole sim is targeted) would consider a simplified spherical cow to be accurate. That's why the spherical cow is a meme.
Perhaps you're getting the pushback you're getting, because you have a different idea of what accuracy in physical simulations means.
> https://blackhole.plav.in/ The lines in the demo look upscaled and aliased for some reason.
Could you please share a screenshot so that I investigate what actually happens? I tested on a few different devices, but far from anything extensive.
Earlier quoted context omitted.
I clicked on this because I worked on the infra that simulated the famous blackhole sim in interstella. I thought "oooh this is interesting I wonder how they are going to do physically accurate on an end device" Recalling how the original particle sim was something like 100TB, took 2 weeks to generate and seemed to write in a way that killed disks. but that was >10 years ago, so what clever stuff has been done to mod…
> why the stars surrounding the black hole are just points, and more over why the lines are straight to the centre of the hole Sorry for confusion! Points + lines are just other users looking at the black hole right now, their camera locations and lines of sight. Nothing more! In the first hours of HN frontpage, there were a lot – and I can see how one can understand them as parts of actual scene :) I decided not to…
Yeah I couldnt work out what they were in relation too
Earlier quoted context omitted.
it's common to use a colormap, but not using a perceptually uniform colormap in the year 2026 is quite a blunder
> not using a perceptually uniform colormap in the year 2026 is quite a blunder Then you are up for a big surprise if you browse through modern published papers :)
Earlier quoted context omitted.
Helio- is actually "sun", not "hole", and it's Greek, not Latin, but I 100% agree with you: it's pointless technical vocabulary that only serves to obfuscate. I think in this particular case, it's just some internet neologism (which is a good word, since coinage can mean a couple different things), made based on analogies with older phobias. For those of us who know Latin and Greek, though, all we can really do is sh…
What would be the correct latin/greek word for it?
If anyone's interested in the accuracy, this is very 'visualisation grade' software. Its a bit of a pet peeve of mine that people present these sims as being very physically accurate, when they contain major inaccuracies, some of which are very obvious and/or deliberate. This one has some serious physical limitations I wouldn't mind at all if it didn't say that this was a *physically accurate* black hole specifically…
but why was the picture taken of black hole have accretion disk yellow?
Earlier quoted context omitted.
Could you please share a screenshot so that I investigate what actually happens? I tested on a few different devices, but far from anything extensive.
This is on Chrome/Win11: https://snipboard.io/W8SXYm.jpg
Can you try if increasing "render scale" in params->display helps?
