Continuous measurement variablesKontinuierliche Messgrößen

scalar or tensor quantity the product of which by the electric field strength in a medium is equal to the electric current density

for a physical system exchanging quantities of heat with two bodies, during a reversible cycle, a positive state quantity characterizing each body and proportional to the quantity of heat exchanged with this body

rate of propagation of an acoustic wave

measure for the friction forces of fluids

rate of heat flow per unit temperature and unit length

mass of material flowing per unit time

measure for the friction forces of a fluid divided by the fluid density

number of revolutions per time

material characteristic expressed as the capacitance between two plates when the intervening space is filled with a given insulating material and the capacitance of the same plate arrangement when the space is filled with air or is evacuated

height of process material in a tank, vessel, silo or other container

at a point of a surface, scalar quantity equal to the limit of the quotient of the magnitude of the component vector normal to the surface of the force acting at this point, by the area of a surface containing the point, when all the dimensions of that surface tend to zero

reciprocal of the period

derivative with respect to time t of energy E being transferred or transformed

one-dimensional subspace of space-time, which is locally orthogonal to space

quantity equal to the volume dV of substance crossing a given surface during a time interval with infinitesimal duration dt, divided by this duration, thus qV = dV / dt

result of an addition or of successive additions of values of variables

at a given point within a three-dimensional domain of quasi-infinitesimal volume dV, scalar quantity equal to the mass dm within the domain divided by the volume dV, thus ρ = dm/dV

one-dimensional subspace of space-time, which is locally orthogonal to time

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