Recent content by blurrscreen

For the fermi dirac distribution function for temperatures higher than 0 K, how do we approximate the number of electrons available for conduction?

OK, got it. Just one last question. If I have a fluid in a container in outer space with an object in the fluid and I seal the container tight, is there any pressure acting on the object?

Alright. So when we measure pressure without an object at that level, we must consider both forces, right?

Exactly, but anything kept in the middle(in this case the point in the fluid) must experience both forces. The pressure hence must be twice what we experience. Why isn't it so?

New doubt! Consider a point at a certain depth in an ideal fluid. We say that pressure at that point is due to the weight of the fluid above it. But since the fluid is static, the fluid layer at that depth must exert some sort of reaction force to the weight of the fluid. Why don't we consider...

Thanks for all the help! Hydrostatics was a little tough for me to grasp.

True, but the NET pressure at every point is zero. Then why does fluid pressure exist?

Paisiello, thanks for the response. But imagine gravity pushing down on the fluid, thus applying a pressure to it which, according to pascal's law is equally transmitted at all points. Then why do points at different heights in the fluid have different pressures.

Alright, consider one point at a certain depth in a fluid. If the pressure along all directions is equal, then the net pressure there is zero. So why do fluids have pressure at all?

If it acts equally in all directions at a given point, then why isn't the net pressure at all points in a fluid zero?

I've had a doubt about the following (somewhat contradictory) statements. 1) pressure applied to an incompressible fluid is equally transmitted at all points. 2) pressure at points at different heights in a fluid placed in a container in a gravitational field are different. Gravity applies a...