negative pressure

Noun

Meaning

Pressure that is less than normal atmospheric pressure

The tension in a liquid that is thermodynamically metastable with respect to the vapour phase; especially that in the xylem of vascular plants that allows transpiration to great heights

Examples

What it takes to produce a gravitational repulsion is a negative pressure. According to general relativity, it turns out... both pressures and energy densities can produce gravitational fields, unlike Newtonian physics, where it's only mass densities that produce gravitational fields. Alan Guth

Music has become a bigger business, and with that there is more pressure to succeed; I think that it creates a negative pressure for being creative. Jerry Harrison

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