After the energy of the universe?
Discussion
Aye as above heat death. Heat is the last stage for all energy and any heat that doesn’t get captured somewhere drifts off into space and is lost. We’ll hit a point (well probably not humans but someone) where we can’t scavenge enough energy to sustain ourselves and that will happen everywhere. Functional end of the universe.
MDUBZ said:
For all the energy to be gone/exhausted doesn’t that also mean there would also be no matter.. and if there is no matter then there is no space and time which takes us back to a singularity?
There would still be matter, it would just be inert and/or deep frozen. As the temperature drops to 0deg Kelvin all matter will completely freeze.Yeah kind of, inert matter doesn't have any energy of it's own.
Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
46and2 said:
Would there not still be gravity?
Gravity will always be there. Big bang, lots of energy, lots of matter, over time local gravity pulls it together to form galaxies and planets, then after the explosive energy has disappeared gravity pulls galaxies back colliding and merging together forming larger masses of gravity pulling all the galaxies back into one big lump. It's unstable it explodes throwing matter out, universe 2.0 is created, or possible universe 111104826287. Since it's on a repeat.ZedLeg said:
That's a good question, I had to look it up 
Gravity would still exist around objects in space but we wouldn't have star systems etc as the stars that hold them together would be long gone.
According to Coxy - yes I just watched the video again, in the end, there will be no matter for gravity to act upon The last of it, black dwarves and black holes. It will evaporate into radiation & float off into the cosmos as an ever expanding universe heads towards absolute zero. No temperature = no work = no anything, 2nd law of thermodynamics again etc. Essentially, Slough but much larger.Gravity would still exist around objects in space but we wouldn't have star systems etc as the stars that hold them together would be long gone.
President Merkin said:
According to Coxy - yes I just watched the video again, in the end, there will be no matter for gravity to act upon The last of it, black dwarves and black holes. It will evaporate into radiation & float off into the cosmos as an ever expanding universe heads towards absolute zero. No temperature = no work = no anything, 2nd law of thermodynamics again etc. Essentially, Slough but much larger.
Yep I can't remember the timeframe but it was something with many many many zeros... Nothing but photons and leptons left. Heat death is awesome. This is my favourite fan edit on youtube when I get really annoyed about something insignificant. Watch on full screen with headphones, it really sucks you in:
The sun dies three mins in. The last star in the universe is dead by around four and a half mins... the video is half an hour long.
I too like the idea that once everything is reduced to radiation then time and space become meaningless and you end up with a singularity
The sun dies three mins in. The last star in the universe is dead by around four and a half mins... the video is half an hour long.
I too like the idea that once everything is reduced to radiation then time and space become meaningless and you end up with a singularity
I think energy is always conserved. It never gets used up. I think perhaps the OP means free or useful energy ie energy that can do work, also associated with the concept of entropy. Currently it looks like the universe is expanding (and rare of expansion accelerating) and that entropy will increase over time meaning that the same energy will be spread out over much larger volume.
I just watched about a third of the timelapse video. It’s truly awesome stuff and I think I got to around a hundred thousand trillion trillion years. It’s going to be a bit dark and chilly by then.
I’ll watch it again when I’m not supposed to be getting on with some work but the message I’ve got so far is that it seems we do have time for a nice cup of tea.
I’ll watch it again when I’m not supposed to be getting on with some work but the message I’ve got so far is that it seems we do have time for a nice cup of tea.
ZedLeg said:
Yeah kind of, inert matter doesn't have any energy of it's own.
Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
As the block of granite cools down, surely the rest of the planet will heat up, if only by an indetectable amount. The heat from with granite dissipates into the air around it. According to chaos theory, that might be what eventually causes a hurricane in Florida. Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
glenrobbo said:
If there’s a chance of bumping into Eccentrica Gallumbits, I’ll give it a try.TwigtheWonderkid said:
ZedLeg said:
Yeah kind of, inert matter doesn't have any energy of it's own.
Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
As the block of granite cools down, surely the rest of the planet will heat up, if only by an indetectable amount. The heat from with granite dissipates into the air around it. According to chaos theory, that might be what eventually causes a hurricane in Florida. Take a block of granite, if you don't interact it'll just sit there forever. Pick it up, throw it, heat it until it glows, it's now full of energy but it's all transferred from whatever source interacted. When you stop interacting, the energy will eventually leach out and it will once again be inert. That's essentially what's happened at heat death, all the energy from everything has leached out and drifted off into the void. Leaving nothing but cold, dark and inert matter.
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