(adsbygoogle = window.adsbygoogle || []).push({}); What Lies on the Other Side of Pressure ???

Pressure is commonly defined as force per unit area.

[tex] P = \frac{F}{A} [/tex]

Pressure is a scalar quantity but force is a vector quantity. To make sense the equation must the scalar product of vector force and a vector which is equivalent to inverse of a vector product, [itex] r \times r [/itex].

But the concept of pressure as a scalar is clear when it is defined as the volume rate of change of energy.

[tex] P = \frac{\partial E}{\partial V} [/tex]

But if pressure is properly defined within an enclosed volume, what is the definition of pressure outside this volume?

If this volume is the universe itself, what is the pressure outside the universal volume?

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# What Lies on the Other Side of Pressure ?

**Physics Forums | Science Articles, Homework Help, Discussion**