Physics Question #1479

Marc, a 26 year old male from Liverpool asks on June 22, 2003,

I would like to know if you could tell me a basic expalnation as to what is between particles of gas for e.g is there any space in between air in our atmosphere or is everything made up of matter that we touch.

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The answer

Barry Shell answered on June 24, 2003

In fact most of the world is space between things. Besides the relatively large space between individual atoms of a gas, each atom itself is mostly space. The distance between the nucleus of an atom and the cloud of orbiting electrons is vast. The space in between contains nothing. But it's not really nothing, since there's always a probability that either an atom or an electron will be in a particular spot. There is another question and answer at that explains what the empty space is inside atoms.

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