Starlink 100mph Limit in Ukraine: Sources Needed

Linear algebra settles two of the three pressure definitions. The third needs a constitutive law, and the bulk-viscosity term shows exactly where the gap comes from.

Swap PV for the work integral and enthalpy stops being a state function. A two-path counterexample, the dH = TdS + VdP derivation, and the conditions under which ΔH really equals heat.

A uniform, unchanging density can still carry transport. The current comes from the phase gradient, and a plane wave stands for a long packet, a scattering state or a particle beam, never a single normalized particle.