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But fluids are characterized by more than just the energy density at each point. There can also be pressure, which can be thought of as the amount of force the fluid would exert on the walls of a container.
Sean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
It says that for a fixed mass of gas the pressure is inversely proportional to the volume (if you double the pressure, you halve the volume), the temperature is proportional to the pressure (if you double the temperature, you double the pressure) and the volume is proportional to the temperature, at fixed pressure. It doesn’t matter what the gas
... See moreHelen Czerski • Storm in a Teacup: The Physics of Everyday Life
Robert B. Leighton • Six Easy Pieces: Essentials of Physics Explained by Its Most Brilliant Teacher
The standard definition of high blood pressure is a systolic of 140mmHg or more, and/or a diastolic of 90mmHg or more.
Rachel Reed • Why Induction Matters (Pinter & Martin Why it Matters Book 14)
freezing. Helium, even at absolute zero, does not freeze, unless the pressure is made so great as to make the atoms squash together. If we increase the pressure, we can make it solidify.
Richard P. Feynman, Robert B. Leighton, • Six Easy Pieces
The general name of energy which has to do with location relative to something else is called potential energy. In this particular case, of course, we call it gravitational potential energy.
Robert B. Leighton • Six Easy Pieces: Essentials of Physics Explained by Its Most Brilliant Teacher
potential energy
Sean M. Carroll • The Biggest Ideas in the Universe: Space, Time, and Motion
Mass, on the other hand, is an intrinsic property; roughly speaking, mass is the resistance that an object has to being accelerated.