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What happened before the Big Bang? The conventional answer to that question is usually, “There is no such thing as ‘before the Big Bang.’” That’s the event that started it all. But the right answer, says physicist Sean Carroll, is, “We just don’t know.”
But what came before (cosmic inflation/big bang)? We only have theoretical possibilities, with likely no data or information from that time contained within our observable Universe to guide us. We’ll keep searching for clues, but for right now, don’t believe the hype (and I’m looking at you, Steinhardt, Turok, and Greene, among others); keep them as possibilities if you fancy them, but that speculation is no replacement for the best that science has to offer right now!
originally posted by: ImaFungi
originally posted by: dragonridr
originally posted by: ImaFungi
a reply to: dragonridr
Ok so now that we know the term vacuum, no longer is what we thought it was (when we thought it was nothing), now what is it said vacuum is? Is it not critically known and understood that when one uses the term 'vacuum', they are referring to Gravity field, EM field, Quark field, Electron field, and Higgs field?
Physics redefined a vacuum as the lowest possible energy state of a given area. Simple way to be all inclusive yet brief.
Ok so if earth is the given area, where is the vacuum of/in/on earth? Its when people say 'atoms are mostly empty space', its really maybe equal or more so, pockets of meta material, which is low dense regions of 'field space', that exist in all atoms and between all atoms? And very dense objects are just stronger/denser bonds of atoms and molecules so there is less low density region between them right?
In real dense objects are the atoms themselves more dense? In the way that people say between the nucleus and electron there is so much empty space, and even in the nucleus there is empty space (?), in really dense objects is even the atom, nucleus to electron ratio more dense?
This view, and seemingly likely truth, gives greater understanding and meaning maybe to the nature of electron orbital geometries, and how they arrange as they are in their orientations based on the field disruptions surrounding them.
originally posted by: Arbitrageur
a reply to: KrzYma
Another example that you're criticizing the mainstream claims when you don't even know what they are. Sure there are mainstream scientists who speculate about what was before the big bang, but usually they admit they are speculating, because mainstream ideas for anything before the big bang are speculative.
The truth is, mainstream claims that "we just don't know" what happened before the big bang.
Thinking About Time Before the Big Bang
What happened before the Big Bang? The conventional answer to that question is usually, “There is no such thing as ‘before the Big Bang.’” That’s the event that started it all. But the right answer, says physicist Sean Carroll, is, “We just don’t know.”
This is a more detailed article explaining how we don't even know how long cosmic inflation lasted and why it poses difficulties for us in understanding what preceded it, but it also advises us against perceiving the speculation about what happened before as anything but speculation:
What Happened Before The Big Bang?
But what came before (cosmic inflation/big bang)? We only have theoretical possibilities, with likely no data or information from that time contained within our observable Universe to guide us. We’ll keep searching for clues, but for right now, don’t believe the hype (and I’m looking at you, Steinhardt, Turok, and Greene, among others); keep them as possibilities if you fancy them, but that speculation is no replacement for the best that science has to offer right now!
We are still teaching this idea about atoms being mostly empty space to students today, and I'm surprised you'd argue against it:
originally posted by: dragonridr
Just get rid of the idea that atms are mostly empty space thats changed since id say about the 50s.
The size of the nucleus and the electrons are very small, so the atom is mostly composed of empty space.
Science writers are wrong frequently. That's apparently written by a science writer, not a scientist, and that is also addressed in the source I provided pointing out that's a common answer, but it's based in speculation rather than mainstream science.
originally posted by: KrzYma
Ah, really ? What about the video from New Scientist ? This video tells us something different than "we don't know"
originally posted by: Arbitrageur
a reply to: dragonridr
I can stack sponges one on top of another too, and they don't occupy the same space, but it doesn't mean they don't have a lot of space in them. I noticed you avoided addressing the neutron star density.
I don't quite follow that particular comment. Seems like the space they take up is key to density. I understand your argument about electron clouds, and it's not totally without merit, however lots of university sources read like the following and I find it difficult to disagree with them:
originally posted by: dragonridr
Its about size of particles not the space they take up.
atoms are very small and matter is mostly empty space, but 'feels' solid because the atoms of your hand are repelled by the electromagnetic forces between your atoms and an objects atoms (like a table).
atoms are mostly empty space
In that example you describe difficulty of another object infringing on the space occupied by the rotating nylon line.
Not exactly. It's telling us more about the structure of electron orbitals and how they explain the arrangement of elements in the periodic table corresponding to their bonding tendencies, depending on how many orbitals are occupied and how stable they are.
originally posted by: ImaFungi
a reply to: Arbitrageur
That diagram of the merging electron clouds is interesting. It is suggesting (or natures action is proving) the attractive force between electrons and proton is stronger then repulsive force between electron cloud and electron cloud huh?
originally posted by: ImaFungi
a reply to: dragonridr
In quantum field theory, do the fields the gauge bosons are derived from, not exist everywhere?
Magnetism in the magnet, movement of photons; It is electrons that cause this right, the very act of electrons existing, and circumstantially moving in the appropriate manner as to create a magnet, interacts with the field that the electrons and all particles exist 'in/on'?
And the 'points' at which the electron 'physically touches' the field, and causes it to react to the electrons movement, those points are called photons?
originally posted by: mbkennel
The fields exist everwhere but can have vacuum values in most places.
Not quite, the electromagnetic fields when computed in the correct quantum mechanical manner can vibrate only in certain 'modal' ways from quantum mechanics. The elementary components/basis functions of those 'modes' are photons. An analogy is a Fourier decomposition of a continuous function. The 'contniuous function' is the large amplitude E&M fields as described by Maxwell equations. You approximate this with certain quantities of elementary excitations of the fields which are permitted by QM: a certain 'number' of photons of a given momentum vector & wavelength plus some more of others etc roughly 'sum up' to the macroscopic E&M fields. The photon represents the physical fact that there is some elementary minimum that you can't go below in amplitude (and this changes with frequency), just as an atom is the smallest piece of what was originally thought to be macroscopic continuous matter.