Infinite photons in infinite universe?

[R1]

<br />as far as the amount of redshift, it turns out to be way much higher than I thought, if the initial<br />light was ultraviolet and above!<br /><br />nova explored, so when the cmbr began, the atoms would wave already been formed? -- />and therefore the<br />largest amount of mass conceivable? -- />and again therefore the largest amount of gravity conceivable was<br />already everywhere ? <div class="Discussion_UserSignature"> </div>

 

[ianke]

Hello John1R<br /><br />Those are questions better put to someone more informed on the subject than I friend.<br /><br />I would hazzard a guess that the answer is yes though. Perhaps that is why the cosmic expansion was slowing for the first 5 billion years. Or at least that is my take on it.<br /><br />Ianke <br /> <div class="Discussion_UserSignature"> </div>

 

[nova_explored]

Yeah, around 300,000 years old. Anything before the decoupling (ability to retain electrons to form hydrogen) is unvisible to radiation.<br /><br />as far as gravity goes, your guess is as good as mine, no one knows what is/was going on with gravity at this stage, or what role it played, and how it played into formation of matter/galaxies, alongside expansion.<br /><br />personally, i don't think gravity came into effect until galaxy formation. i can see convection and thermaldynamics being workable theories for genesis of matter coalition, causing spin and rotation. It seems only very massive bodies are subject to effects of gravity. <div class="Discussion_UserSignature"> </div>

 

[search]

<font color="yellow">Is there someone who could point me in the right direction to look for how much energy the CMBR represents in comparison to all of the rest of the observed energy in the known universe? </font><br /><br />I am not sure what your question is...but I will try<br /><br />Content of the Universe<br />WMAP data reveals that its contents include 4% atoms, the building blocks of stars and planets. Dark matter comprises 22% of the universe. This matter, different from atoms, does not emit or absorb light. It has only been detected indirectly by its gravity. 74% of the Universe, is composed of "dark energy", that acts as a sort of an anti-gravity. This energy, distinct from dark matter, is responsible for the present-day acceleration of the universal expansion.<br /><br />CMBR is radiation (microwave radiation) and the elementary particle of radiation is the photon. Now the photons have mass 0 and mass can be converted to energy or electron volts units. This would make us think that the answer is 0 but no it is not.<br /><br />Radiation is made of photons and the calculated mass (energy) of this radiation in the universe is 10ˆ-4 ev for a calculated number of 10ˆ87 particles and that represents 0.005% of the probable mass contribution of the universe.<br /><br />Not much...<br />Attention the pie image do not match the 100% because of rounding up...

 

[ianke]

Hello SEARCH, <br />First of all, thank you for your post. <br /><br />Re:"Radiation is made of photons and the calculated mass (energy) of this radiation in the universe is 10ˆ-4 ev for a calculated number of 10ˆ87 particles and that represents 0.005% of the probable mass contribution of the universe. "<br /><br />This answers my question quite well. And the link you provided was also quite informative in helping me get a grasp on things.<br /><br />Ianke <br /><br /> <div class="Discussion_UserSignature"> </div>

 

[ianke]

The 0.005% was surprising to me. It never fails to amaze me how things Tally somewhat differently than expected. I would have thought it to be a much higher value than that. That is why I come to this sight though. I apperciate the fact that people with a greater knowledge of these issues shares that knowledge with others. <br /><br />Ianke <div class="Discussion_UserSignature"> </div>

 

[ianke]

Search, <br /><br />One more question though. How much of that 0.005% radiation is from the CMBR? Is it the whole of that, or is is only a part of the total?<br /><br />I guess that was 3 questions.<img src="/images/icons/smile.gif" /><br /><br />Ianke <div class="Discussion_UserSignature"> </div>

 

[search]

The main thing is to think about what things are made of and what the mass of the elementary components.<br /><br />Simply put. It is like having two equal glasses, one without water and one with water. They are both full of something (air and water) but the second weights more than the first.<img src="/images/icons/wink.gif" />

 

[search]

CMBR is just part of the total Electromagnetic Radiation.<br /><br />Video<br /><br />Electromagnetic radiation is classified into types according to the frequency of the wave: radio waves, microwaves, terahertz radiation, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays<br /><br />Electromagnetic Spectrum<br /><br />I do not know which percentage belongs to CMBR.

 

[ianke]

SEARCH,<br /><br />Neither do I. It just seems that it might be important to understand such a ratio. I realize the wavelengths dictate how energetic the individual photons are, but the intensityof each wavlenght is also an issue. <br /><br />Perhaps it is a trivial question, but it seems there is somethingto be gained by knowing. There might be something to quantifying the amount of energy the CMBR represents compaired to all of the rest of the radiation out there. <br /><br />Ianke <div class="Discussion_UserSignature"> </div>

 

[search]

Well I do not know but I am almost sure it is possible to calculate and maybe somebody did that.<br /><br />It may be important to know what 0.005% of the universe is made of and in which percentage but we still do not know the other 96% (dark matter and dark energy)...<img src="/images/icons/wink.gif" />

 

[ianke]

How true it is. <img src="/images/icons/smile.gif" /><br /> <div class="Discussion_UserSignature"> </div>