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"No true vacuum exist." How high is density of atoms in space? Could there be a 1mm x 1mm space without atoms?
by _Codemonkeyism 9y ago
"No true vacuum exist."
How high is density of atoms in space? Could there be a 1mm x 1mm space without atoms?
- vlahmot 9y agoMy understanding is that there would still be quantum fluctuatons causing particles to pop in and out of existence.
- _Codemonkeyism 9y agoWould this be protons? Can vacuum contain photons and still be a vacuum? Not sure :-)
- xhrpost 9y agohttps://en.wikipedia.org/wiki/Quantum_fluctuation#cite_note-1 https://en.wikipedia.org/wiki/Quantum_fluctuation#cite_note-...
- mikeash 9y agoAccording to Wikipedia: "Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvins in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies." - https://en.wikipedia.org/wiki/Outer_space https://en.wikipedia.org/wiki/Outer_space I knew that intergalactic space could see densities of one atom per some human-relevant volume of space, but I had no idea that actually accounted for most of what there is!