# Pressure of aether

The volumetric energy density of an aetheric beam ("Mass and inertia", 1): $w=\rho v^2\tag{1}$ The absorption of this energy by the surface of area $$S$$ makes a work by the force $$F$$ on the path $$\Delta L$$: $A=wS\Delta L=F\Delta L\tag{2}$ The total pressure of an aetheric beam is the volumetric density of its energy: $P=\frac{F}{S}=w=\rho v^2\tag{3}$ According to the material particle model, a non-magnetic surrounding aether or the space is pressing on a particle with the particle beam pressure. Similarly to the beam pressure, this pressure is the average energy density of a particle ("Mass and inertia", 11) : $P=\frac{E}{V}\approx\frac{1}{V}\left(mc^2+\frac{mv^2}{2}\right)=\rho c^2+\frac{\rho v^2}{2}\tag{4}$ Introducing the relativistic mass concept, the pressure formula simplifies to: $P=\rho c^2\tag{5}$ The pressure depends on the particle total energy and produces also a potential energy field and a force according to the Euler’s equation: $\rho\mathbf{\overrightarrow{a}}=-grad\;P\tag{6}$