For a photon, this quantity equals power flux density over the speed of light.
For a photon, this quantity equals power flux density over the speed of light. The hypsometric equation relates thickness to the natural log of a ratio of two values of this quantity. The change in this quantity is proportional to density times head loss, and is inversely proportional to the fourth power of pipe radius. An incompressible fluid transmits this quantity equally in all directions, and an increase in fluid velocity decreases this quantity. It is inversely proportional to volume, and directly proportional to temperature. For 10 points, name this quantity measured in pascals, the amount of force per unit area.
For a photon, this quantity equals power flux density over the speed of light.
pressure