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Posted on 4/3/14 at 5:37 pm to J Murdah
All we know is that everything in the universe is moving away from everything else in such a way that, if you trace back their trajectories they end up at the same point. And if there was such an event like the Big Bang, it would have left a predictable pattern of radiation, which we also observe.
From that, The Big Bang is just the best theory we've got to explain those observations.
From that, The Big Bang is just the best theory we've got to explain those observations.
This post was edited on 4/3/14 at 5:40 pm
Posted on 4/3/14 at 5:37 pm to Ross
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:37 pm to The Baker
quote:
What is the bigger question: Do aliens exist? Or Will the universe end?
Both questions involve space - see below:
quote:
Will the universe end?
21 characters (including spaces)
quote:
Do aliens exist?
15 characters (including spaces)
21 > 15 Therefore "Will the universe end?" is the bigger question.
Posted on 4/3/14 at 5:37 pm to The Baker
Piggybacking off that would be the theory of a multiverse. And if all these hypothetical parallel universes continue to expand, will they one day meet? What happens if they do?
Posted on 4/3/14 at 5:39 pm to The Baker
quote:
A closed system can still exchange heat across its boundary. Just no mass.
Isolated system then?
You can't have energy or matter exchange of any kind and have the Second Law remain true.
Posted on 4/3/14 at 5:41 pm to Starchild
quote:
Piggybacking off that would be the theory of a multiverse. And if all these hypothetical parallel universes continue to expand, will they one day meet? What happens if they do?
I'd have a beer with Parallel Me.
Also, random fact I came across, did you guys know that if the universe spanned one Googleplex Planck Legnth's in diameter, that you'd be statistically likely to have an exact replica of yourself living in the same universe.
This post was edited on 4/3/14 at 5:42 pm
Posted on 4/3/14 at 5:41 pm to Starchild
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:42 pm to Ross
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:42 pm to Ross
I think I'm starting to understand. Thanks for the explanation.
This post was edited on 4/3/14 at 5:46 pm
Posted on 4/3/14 at 5:46 pm to theunknownknight
Day late dollar short.
Posted on 4/3/14 at 5:46 pm to boom roasted
It's all good man. Thermo was always my favorite subject in school partly because it's interesting and partly because I'm a masochist.
Posted on 4/3/14 at 5:53 pm to Ross
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:56 pm to The Baker
What branch of study does all of this fall under? Some sort of engineering?
Posted on 4/3/14 at 5:56 pm to Ross
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:58 pm to The Baker
Hey it was a hard class but it was cool.
But Fluids, man frick Fluids. If you can make any sort of sense out of Navier Stokes you are a better engineer than me.
But Fluids, man frick Fluids. If you can make any sort of sense out of Navier Stokes you are a better engineer than me.
Posted on 4/3/14 at 5:58 pm to boom roasted
(no message)
This post was edited on 1/11/21 at 1:30 am
Posted on 4/3/14 at 5:58 pm to J Murdah
quote:
What do you mean by will the universe end? Stop expanding? Implode? Either way thats the bigger question.
Yeah, we really don't know about these. It's an almost mathematical certainty that there is life outside of Earth.
This post was edited on 4/3/14 at 6:01 pm
Posted on 4/3/14 at 6:04 pm to Hawkeye95
Yes to both. Be ready.
Posted on 4/3/14 at 6:04 pm to boom roasted
quote:
Entropy is the only quantity in the physical sciences (apart from certain rare interactions in particle physics; see below) that requires a particular direction for time, sometimes called an arrow of time. As one goes "forward" in time, the second law of thermodynamics says, the entropy of an isolated system will increase. Hence, from one perspective, entropy measurement is a way of distinguishing the past from the future. However in thermodynamic systems that are not closed, entropy can decrease with time: many systems, including living systems, reduce local entropy at the expense of an environmental increase, resulting in a net increase in entropy. Examples of such systems and phenomena include the formation of certain crystals, the workings of a refrigerator and living organisms.
Seriously.
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