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When matter comes into contact with anti-matter they mutually annihilate each other, and their masses are instantly turned into radiation according to Einstein’s famous equation, E = mc2, in which E is the energy of the radiation, m is the annihilated mass, and c is the speed of light.The CMB is thermal radiation.
Disregarding neutrinos - which do not interact with other matter - and also the host of other particles that appear transiently in the course of high‑energy nuclear interactions, our universe is made of four kinds of so-called elementary particles: neutrons, protons, electrons, and photons, which are particles of radiation. The only important qualification one need make to such a simple statement is that the first three particles exist also as antiparticles, the particles constituting matter, the anti-particles anti-matter. When matter comes into contact with anti-matter they mutually annihilate each other, and their masses are instantly turned into radiation according to Einstein’s famous equation, E = mc2, in which E is the energy of the radiation, m is the annihilated mass, and c is the speed of light.
This is where the cosmic background radiation came from; matter / antimatter mutual annhilations.
Yes, I know all about the Standard Model. I know all about the history of the CMB. And I know about the mystery of the matter-antimatter imbalance.In 1965, Arno Penzias and Robert Wilson at the Bell Telephone Laboratories in New Jersey discovered the cosmic background radiation - a new microwave radiation that fills the universe, coming equally from all directions, wherever one may be. It is by far the dominant radiation in the universe; billions of years of starlight have added to it only negligibly. It is commonly agreed that this is the residue remaining from that gigantic firestorm of mutual annihilation in the Big Bang.
It turns out that there are about one billion photons of that radiation for every proton in the universe. Hence it is thought that what went into the Big Bang were not exactly equal numbers of particles and anti-particles, but that for every billion anti-particles there were one billion and one particles, so that when all the mutual annihilation had happened, there remained over that one particle per billion, and that now constitutes all the matter in the universe -- all the galaxies, the stars and planets, and of course all life.
I'm using direct quotes from George Wald, Nobel Laureate.Yes, I know all about the Standard Model. I know all about the history of the CMB. And I know about the mystery of the matter-antimatter imbalance.
Believe me you are preaching to the choir. But you are very ambiguous in your postings and I don't know what you are thinking or what your point is.
I don't believe you did, sorry. Because if you did you would have recognized the importance CMB plays in explaining the origin of the universe. It's not a minor detail. It's center stage.Yes, as I said I know all that. I still don't know what your point is.
This is 100% incorrect. You are describing infrared waves or heat. The CMB are photons.The CMB is thermal radiation
The COBE satellite found it very accurately had the shape of BB radiation. So what we saw was very hot red shifted to the microwave region.This is 100% incorrect. You are describing infrared waves or heat. The CMB are photons.
What does that have to do with what we are discussing?The COBE satellite found it very accurately had the shape of BB radiation. So what we saw was very hot red shifted to the microwave region.
Which came from what? And how much of what?Your focus early on was on the nature of the CMB not so much where the energy came from. So my answer was BB radiation.
Far IR is thermal radiation what we see here. It was very hot where it originated. But highly redshifted here.This is 100% incorrect. You are describing infrared waves or heat. The CMB are photons.
I thought we just went through that.Which came from what? And how much of what?
Dude, just admit you don't know what you are talking about because arguing that the CMB is thermal radiation is 100% incorrect.Far IR is thermal radiation what we see here. It was very hot where it originated. But highly redshifted here.
It has a wave nature when it goes through space but a particle nature when it was emitted billions of years ago
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I need to hear you say it so that I understand that you understand.I thought we just went through that.
I told you this in earlier posts. This is what I'm talking about. Maybe you will believe it from wikipedia:Dude, just admit you don't know what you are talking about because arguing that the CMB is thermal radiation is 100% incorrect.
This is your source of information? This is why you started talking about plasma and thermal radiation? No where in this description is the explanation of what CMB is and how it was created.I told you this in earlier posts. This is what I'm talking about. Maybe you will believe it from wikipedia:
When the universe was young, before the formation of stars and planets, it was denser, much hotter, and filled with an opaque fog of hydrogen plasma. As the universe expanded the plasma grew cooler and the radiation filling it expanded to longer wavelengths. When the temperature had dropped enough, protons and electrons combined to form neutral hydrogen atoms. Unlike the plasma, these newly conceived atoms could not scatter the thermal radiation by Thomson scattering, and so the universe became transparent.
Thermal radiation means it comes from anything that's hot. Thermal radiation isn't always all microwave (eg the sun) It comes with a spectrum called black body radiation. The CMB spectrum maximum was way toward the UV and far from microwave. Like every distant galaxy the radiation was red shifted from that extreme UV all the way down to microwaves. It still had the original shape of the CMB but was shifted so the apparent temperature was 2.7K and not the thousands of degrees of the original source billions of years ago.
You are probably confused by the fact that the CMB is said to be 2.7K. It only appears that way here, but we know better.
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My god. You are really going off the deep end.So timid and cowardly. Winner, winner, chicken dinner for me. Loser, loser, now who's dinner for you.
You emphatically said the CMB was not thermal radiation. Do you disagree with the Wiki citation?This is your source of information? This is why you started talking about plasma and thermal radiation? No where in this description is the explanation of what CMB is and how it was created.
Yes. CMB is not thermal radiation. So says E=MC^2. Thermal radiation is infrared or heat.You emphatically said the CMB was not thermal radiation. Do you disagree with the Wiki citation?
Because if you disagree then all bets are off. But I'm not going to insult you as is your custom.
If you want me to say that the universe came from a sort of vacuum fluctuation with some small asymmetric property of matter/antimatter. Sure that's the best bet, but I neither believe it nor disbelieve it. But when you disagree with some basic physics like the thermal nature of the CMB I pursued that to see if you clearly knew what the physics is.
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particle | charge of particle | anti-particle | charge of anti-particle |
|---|---|---|---|
proton | positive | anti-proton | negative |
neutron | neutral | anti-neutron | neutral |
electron | negative | anti-electron or positron | positive |
