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Interstellar movie black hole implemented with Einstein's equations in C++

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Re: Interstellar movie black hole implemented with Einstein's equations in C++

#21

Post by bhickey »

guitarlimeo wrote: post #8
hermitcrab wrote: post #6

It is a pity they didn't spend comparable effort on the story. I thought it was a really disappointing film, especially after they banged on so much about how good the physics in it was (apart from the black hole rendering, it wasn't).

Did we watch the same movie? They got bunch of physics stuff right, like the water planet, the relative aging due to being near the massive black hole etc. Only thing that wasn't "correct" was the wormhole and especially the tesseract, but that was some creative writing which allowed for a nice twist. I enjoyed it, a nice scifi.

It was completely uneven.

Cooper sobbing as he listened to years of messages from his family? I wish I could've written that. The twist where Mann activated his beacon because he didn't want to die alone? Solid.

We need the gravity equation to get off Earth because the crops are dying? Love can escape a black hole through the tesseract? This is just patent technobabble nonsense.

Where _Interstellar_ fails is in exposition. Love is the most powerful force in the universe? The Fifth Element pulled that off by not pretending to be serious. Anything is permitted in science fiction, but once you commit to explaining it, you need to make sense.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#23

Post by danielbln »

idk1 wrote: post #20

[possible spoiler alert] Is Intersetllar the movie where Matthew McConaughey turned into a bookcase?

He didn't turn into a book case, but a book case as a sort of representation of multi dimensional space was a part of the movie, yes.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#24

Post by ropejumper »

idk1 wrote: post #20

[possible spoiler alert] Is Intersetllar the movie where Matthew McConaughey turned into a bookcase?

Not turned into, he got put into a projection of a higher-dimensional space at the location of his daughter's bookcase some time in the past.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#25

Post by fouronnes3 »

Waterluvian wrote: post #22
idk1 wrote: post #20

[possible spoiler alert] Is Intersetllar the movie where Matthew McConaughey turned into a bookcase?

It’s the one where Matt Damon gets stuck on another planet. No not that one. Not that one either.

New Fermi estimation interview question just dropped: are there more movies where Matt Damon is stuck on a planet, or movies where Tom Hanks plays a captain?

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#26

Post by wombat-man »

bhickey wrote: post #21
guitarlimeo wrote: post #8

Earlier quoted context omitted.

Did we watch the same movie? They got bunch of physics stuff right, like the water planet, the relative aging due to being near the massive black hole etc. Only thing that wasn't "correct" was the wormhole and especially the tesseract, but that was some creative writing which allowed for a nice twist. I enjoyed it, a nice scifi.

It was completely uneven. Cooper sobbing as he listened to years of messages from his family? I wish I could've written that. The twist where Mann activated his beacon because he didn't want to die alone? Solid. We need the gravity equation to get off Earth because the crops are dying? Love can escape a black hole through the tesseract? This is just patent technobabble nonsense. Where _Interstellar_ fails is in expos…

Yeah I agree. Overall I still like it but I need to overlook parts of it.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#27

Post by bowsamic »

bhickey wrote: post #21
guitarlimeo wrote: post #8

Earlier quoted context omitted.

Did we watch the same movie? They got bunch of physics stuff right, like the water planet, the relative aging due to being near the massive black hole etc. Only thing that wasn't "correct" was the wormhole and especially the tesseract, but that was some creative writing which allowed for a nice twist. I enjoyed it, a nice scifi.

It was completely uneven. Cooper sobbing as he listened to years of messages from his family? I wish I could've written that. The twist where Mann activated his beacon because he didn't want to die alone? Solid. We need the gravity equation to get off Earth because the crops are dying? Love can escape a black hole through the tesseract? This is just patent technobabble nonsense. Where _Interstellar_ fails is in expos…

I agree, in fact it almost gives it a sense of uncanny valley

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#28

Post by slig »

NKosmatos wrote: post #12

If you want to avoid opening Twitter (now known as X), here is the link to the paper: https://arxiv.org/pdf/1502.03808 TLDR “A typical IMAX image has 23 million pixels, and for Interstellar we had to generate many thousand images, so DNGR had to be very efficient. It has 40,000 lines of C++ code and runs across Double Negative’s Linux-based render-farm. Depending on the degree of gravitational lensing in an image, it…

How fast could this run in a modern CPU with a modern GPU?

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#29

Post by AlexGizis »

kawa wrote: post #13
guitarlimeo wrote: post #8

Earlier quoted context omitted.

Did we watch the same movie? They got bunch of physics stuff right, like the water planet, the relative aging due to being near the massive black hole etc. Only thing that wasn't "correct" was the wormhole and especially the tesseract, but that was some creative writing which allowed for a nice twist. I enjoyed it, a nice scifi.

Their starship was bullshit. On earth they needed a big Saturn 5 like rocket to bring it into space and later they fly into orbit like it's nothing. If the planets they visited had much lower gravity then earth this may be possible, but this wasn't noticeable or talked about. And even on Mars you need much more fuel to get into orbit than could be stored in their tiny ship.

To expand on this, if they tried to land on the water planet where time so dilated that one hour equals 7 months… what would their velocity have been when they contacted the surface? And how much energy did their spaceship need to reach escape velocity from there?

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#30

Post by wizzwizz4 »

kawa wrote: post #13
guitarlimeo wrote: post #8

Earlier quoted context omitted.

Did we watch the same movie? They got bunch of physics stuff right, like the water planet, the relative aging due to being near the massive black hole etc. Only thing that wasn't "correct" was the wormhole and especially the tesseract, but that was some creative writing which allowed for a nice twist. I enjoyed it, a nice scifi.

Their starship was bullshit. On earth they needed a big Saturn 5 like rocket to bring it into space and later they fly into orbit like it's nothing. If the planets they visited had much lower gravity then earth this may be possible, but this wasn't noticeable or talked about. And even on Mars you need much more fuel to get into orbit than could be stored in their tiny ship.

Eh, this isn't actually that bad. It's quite easy, using a jet aircraft, to (via a ballistic trajectory) get into space. Surrounded by reaction mass as you are, the rocket equation isn't nearly so bad. You could conceivably dock with something in orbit, if you had elastic tethers or something to make the acceleration survivable. If you're much lighter than what you're docking with, you won't knock the satellite out of orbit.

Heck, you could even ignore the jet aspect, and go for full rocket. (An ICBM only weighs around 50 tonnes, after all.) Getting the heavy thing into orbit, though, requires proper, multi-stage rockets.

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