A universe from nothing... (for space/science nerds)

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Posted by Capitalizt on Oct-22-2009 18:10:

A universe from nothing... (for space/science nerds)

fascinating speech for the science geeks here.. just thought I'd share.. It really starts at the 8 minute mark.

What blew my mind was hearing that if if all visible matter and energy were removed from existence, it would leave the universe essentially unchanged.

The universe =

30% dark matter
+ 70% dark energy

Earth, and everything we see in telescopes is < 1%.

Posted by Ridexer on Oct-22-2009 18:40:

I remember reading some theory, that the emptiness can spawn matter/energy (rarely) and as the universe continues to expand, the area and sheer time avaiable will make stuff appear out of nowhere eventually. Atoms, Molecules, small clumps of matter, eventually even planets, and given infinity of time and space, solar system just like this from this exact moment will appear.

There was also some calculations about big bang spawning in something like 1 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 or so years...

Posted by Capitalizt on Oct-22-2009 18:50:

quote:
Originally posted by Ridexer
I remember reading some theory, that the emptiness can spawn matter/energy (rarely)

He mentions this at 20:00 "Nothing isn't nothing any more." We are learning that quantum fields and particles are constantly popping in and out of existence in empty space..and that "nothing" (the vacuum) actually has mass. Crazy shit..I love it.

Posted by nefardec on Oct-22-2009 20:02:

that was a really great video - thank you for posting it.

particularly loved the bit about the quantum fluctuations and the background of 'nothing', as well as the observations on observation...

i have quite an interest in this 'nothingness' as a sort of deep reservoir of creative potential, bohm's 'ocean of the implicate', from which all things unfold more or less randomly.

Posted by Demoted on Oct-22-2009 22:25:

frrrk yeah. thanks for posting this.

Posted by Demoted on Oct-22-2009 22:27:

his collar sticking out is bothering me though

Posted by stren on Oct-22-2009 22:32:

great, thanks for posting.
That dude looks like a child molest0r though...IGK ?

Posted by Demoted on Oct-23-2009 00:47:

Posted by yukii on Oct-23-2009 02:01:

wow, i loved this lecture, i stayed on my ass the entire thing i wish my lectures at school were this interesting. i could probably sit through another hour.
the universe is so remarkable..

Posted by Lira on Oct-23-2009 03:26:

Very interesting. But, there's one thing physicists say that reminds me of the pre-Einsteinian world. Is there any chance dark matter is today what ether was a hundred years ago?

Posted by Capitalizt on Oct-23-2009 03:38:

quote:
Originally posted by Lira
Is there any chance dark matter is today what ether was a hundred years ago?

I think so.. My own gut feeling is that dark matter is really the same as regular matter..only it is invisible to us because it exists in one of the higher spatial dimensions. We are only capable of perceiving 3 dimensions, however M-theory predicts we actually live in an 11 dimensional universe. If there is matter floating around in higher dimensions that permeate the universe, there could be something special about gravity that allows it to "leak" back and forth between the higher dimensions, and that would explain much of the invisible mass we are detecting in our 3D view of things..

Posted by Robert Gates on Oct-23-2009 05:25:

Re: A universe from nothing... (for space/science nerds)

quote:
Originally posted by Capitalizt
fascinating speech for the science geeks here.. just thought I'd share.. It really starts at the 8 minute mark.

What blew my mind was hearing that if if all visible matter and energy were removed from existence, it would leave the universe essentially unchanged.

The universe =

30% dark matter
+ 70% dark energy

Earth, and everything we see in telescopes is < 1%.

Gr��e Fr�ulein, Sturm-Verbot-F�hrer, Sounds like spam to me, as my brain dump to watch movies, with no indication that moving his hands as the universe expands, but says that if all matter in space and the existence of all the other things that I want to see, but I woke up last thing you want to question the scientific fraudsters send treat gay and gay-jock erotic minors, but if you really look at the top right knowledge, you can learn all kinds of shit kickass science space, and I live in Houston and NASA is just 20 minutes, many people have two jobs, and hell half the people are morons NASA has studied Catholicism and lost all train of thought, but the universe, if only the universe of men to be free, or something, because it's all freaky weird shit in all areas of road space, Researchers, but with all due respect, the committee decided to suspend the license immediately leave the building, science as a kind of turbulence or a Dodge, his theories are the worst tripe popular, are weak

Posted by Robert Gates on Oct-23-2009 05:27:

quote:
Originally posted by stren
great, thanks for posting.
That dude looks like a child molest0r though...IGK ?

Posted by winston on Oct-23-2009 19:08:

John Conway, Free Will Lecture Series: "Quantum Mechanics and the Paradoxes of Entanglement"

http://www.princeton.edu/WebMedia/f...free_will.shtml

Posted by Capitalizt on Oct-23-2009 19:21:

My brain exploded at 4:25.

Posted by winston on Oct-23-2009 19:29:

quote:
My brain exploded at 4:25.

Posted by winston on Oct-23-2009 19:38:

what I love about quantum mechanics is the mathematics behind it, it's beautiful. the relativistitically invariant equations of motion between electrons, quantum kinematics, lorentz group, etc.

cool shit.

Posted by Acton on Oct-23-2009 19:57:

That was a good watch .

Posted by Renegade on Oct-24-2009 04:06:

quote:
Originally posted by Lira
Very interesting. But, there's one thing physicists say that reminds me of the pre-Einsteinian world. Is there any chance dark matter is today what ether was a hundred years ago?

The difference is that the gravitational effects of dark matter can be measured and mapped, whereas - so far as I'm aware at least - there was never any particular evidence for the luminiferous ether. There is certainly something that is exerting a large gravitational force on galaxies and the extent to which this something in any way resembles baryonic matter (i.e. the matter that you, me and the stars are made from) is yet to be known, but until then the potentially misleading term "dark matter" will have to do.

Posted by Robert Gates on Oct-24-2009 04:15:

quote:
Originally posted by Renegade
The difference is that the gravitational effects of dark matter can be measured and mapped, whereas - so far as I'm aware at least - there was never any particular evidence for the luminiferous ether. There is certainly something that is exerting a large gravitational force on galaxies and the extent to which this something in any way resembles baryonic matter (i.e. the matter that you, me and the stars are made from) is yet to be known, but until then the potentially misleading term "dark matter" will have to do.

Gr��e Fr�ulein, Sturm-Verbot-F�hrer, Is this X-Files episode in which a man kills the shadow, and it seems that only clusters of carbon and heated when I wake up, I find it for you,

Posted by EgosXII on Oct-24-2009 04:22:

Great talk, thanks for posting!

loved his side note about scientists having a sense of humility as well.
can't fucking stand 'scientists' who claim to know everything, or even claim to know anything for sure. Irritating as hell.

Posted by saluyamo on Oct-24-2009 04:55:

quote:
Originally posted by Capitalizt
however M-theory predicts we actually live in an 11 dimensional universe.

whats 11th again? I only know 10..

Posted by Sunsnail on Oct-24-2009 04:57:

quote:
Originally posted by Lira
Very interesting. But, there's one thing physicists say that reminds me of the pre-Einsteinian world. Is there any chance dark matter is today what ether was a hundred years ago?

yea but thats not much time to changed at all now is it? think about the 13 billion years. everyone 100 years now? how you can you change?

Posted by Jarvmeister on Oct-24-2009 08:27:

quote:
Originally posted by Robert Gates
Gr��e Fr�ulein, Sturm-Verbot-F�hrer, Sounds like spam to me, as my brain dump to watch movies, with no indication that moving his hands as the universe expands, but says that if all matter in space and the existence of all the other things that I want to see, but I woke up last thing you want to question the scientific fraudsters send treat gay and gay-jock erotic minors, but if you really look at the top right knowledge, you can learn all kinds of shit kickass science space, and I live in Houston and NASA is just 20 minutes, many people have two jobs, and hell half the people are morons NASA has studied Catholicism and lost all train of thought, but the universe, if only the universe of men to be free, or something, because it's all freaky weird shit in all areas of road space, Researchers, but with all due respect, the committee decided to suspend the license immediately leave the building, science as a kind of turbulence or a Dodge, his theories are the worst tripe popular, are weak

Welcome to my ignore list.

Posted by astroboy on Oct-24-2009 11:08:

quote:
Originally posted by saluyamo
whats 11th again? I only know 10..

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