
'Negative pressure' counteracting gravity? - Physics Stack Exchange
Dark energy may be described as a fluid with negative pressure. We say that this negative pressure counteracts gravity and accelerates the expansion of the Universe. Now consider, for example, a ...
What about negative Pressure? - Physics Stack Exchange
What about negative Pressure? Ask Question Asked 12 years, 7 months ago Modified 7 years, 6 months ago
What is the negative pressure? - Physics Stack Exchange
Dec 18, 2021 · 1 I have vacuum pump connected to quartz tube and vacuum sensor, when the pump reaches it max value the sensor reading (-1 bar) and the analog gauge in the pump reach the max …
Negative pressure, tension, and energy conditions
Mar 4, 2015 · But sometimes people object to negative pressure, so I think we could benefit for a comprehensive answer, that includes good definitions, justifications about why the definitions are …
Can a gas sustain a negative pressure? - Physics Stack Exchange
Aug 3, 2021 · A liquid cannot sustain a pressure less than its equilibrium vapor pressure without forming a 2nd phase. In the picture, even though the liquid pressure may be less than atmospheric, it is still …
What about negative (absolute) pressure in Bernoulli Equation
Jun 3, 2022 · A negative pressure would represent an "exhaustion" of static pressure to convert in kinetic energy, so in these conditions the velocity field cannot be realized and the Bernoulli equation …
Is negative 20 psi / 1.5 bar possible? - Physics Stack Exchange
If I understand correctly, negative pressure usually means relative pressure: the difference between inside and outside. If outside is normal (1 bar, 15 psi, 100 kPa etc), how low can the (relative)
Negative pressure in general relativity - Physics Stack Exchange
Aug 22, 2019 · 3 Is there an intuitive way to understand what negative pressure means in general relativity in the same way as positive pressure can be thought to be kinetic energy of gas particles? …
Bernoulli's equation and negative pressure - Physics Stack Exchange
Sep 12, 2018 · An ideal gas always has positive pressure, but a sting under tension has negative longitudinal stress. If you could arrange for tension in all three dimensions, you would have negative …
thermodynamics - Have negative pressures any physical meaning ...
Mar 21, 2013 · Some cubic thermodynamical equations of state predict negative pressures, have negative pressures any physical meaning? Could they be related to negative mass?