Quote:
Originally Posted by afterburn 549
Is space nothing?
I hear that said.
As in a Vacuum.
I think it is some sort of property, as there is such a thing as space sailing, as in space winds?
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When I worked at the lab at WPAFB I was assigned a project that required testing specimens in a very cold environment. I had to come up with a vessel that would maintain liquid helium at something like -450 degrees F. (I didn't invent it)
Anyway, it involved making a thermos bottle with a hard vacuum in it.
Most of the time, we think of a vacuum as a lack of pressure. At some point when "drawing a vacuum" the pressure is so low that continuing to measure the vacuum as pressure no longer makes any sense. Pressure is caused by moving particles with mass. We have to transition to a second way of thinking about vacuum as the lack of moving particles.
So, in space there are few particles of mass moving around, and that makes it a vacuum in the sense, not of a lack of pressure, but a lack of masses moving around.
I don't know if the Solar Wind is caused by mass or light or electromagnetic forces, so I can't help you there.