Distribution of mass - from decoupling to present

[Loren Booda]

Distribution of mass -- from decoupling to present

How has subatomic particle homogeneity changed since cosmological redshift Z=1000? How much have particles maintained their relative positions to present?

I am reminded of the calculation that concludes we have molecules of air in our lungs shared by notorious persons throughout human history. If we are stardust, from what sectors of the universe do our atoms come from?

 

[BobG]

A more interesting question is how many of the molecules of our brain are the original molecules we were born with?

 

[Loren Booda]

Don't our bodies (besides teeth) recycle every ~7 years?

 

[BobG]

Don't our bodies (besides teeth) recycle every ~7 years?

It's still something strange to ponder. Our memories are older than our bodies - yet we grow old.

Everything important lies in the patterns; not the matter itself.

 

[denjay]

Don't our bodies (besides teeth) recycle every ~7 years?

It's still something strange to ponder. Our memories are older than our bodies - yet we grow old.

Everything important lies in the patterns; not the matter itself.

I think the obvious conclusion is that memories are stored in our teeth.

 

[Drakkith]

I think the obvious conclusion is that memories are stored in our teeth.

No wonder I forgot my password after getting my wisdom teeth removed...

 

[Loren Booda]

If two hydrogen atoms are contiguous at Z=1000, what is the farthest apart they could be now?

 

[Mk]

What does Z=1000 exactly mean?

 

[Drakkith]

What does Z=1000 exactly mean?

I thought it was how many times the observable universe had doubled in size since the emission of the CMB, but I'm not sure.

 

[Office_Shredder]

No wonder I forgot my password after getting my wisdom teeth removed...

Why do you think they're called wisdom teeth?

 

[Enigman]

Z is a dimensionless quantity describing red-shift given by Z=(f_emit - f_obs)/f_obs
Z=1089 corresponds to the red-shift of cosmic micro-wave background - greatest distance and furthest back in time
Z=0 refers to the present time.
http://en.wikipedia.org/wiki/Redshift

 

[Mk]

Ah. Ok. I've seen that before.

How much have particles maintained their relative positions to present?

I would assume that the particles haven't moved, but that the distance in between them has homogeneously increased.

Obviously there are many levels of position-changing higher order effects.