Part 4: Mechanics8 of 54 entries
4-14.1
pressurep
quotient of the component of a force normal to a surface and its area: where is unit vector of the surface normal, is…
4-14.2
gauge pressurep_"e"
pressure (t4-14.1) decremented by ambient pressure :
4-15
stresssigma
tensor (iso80000-2) quantity representing state of tension of matter
4-16.1
normal stress, normal stresssigma_"n"
scalar (iso80000-2) quantity describing surface action of a force into a body equal to: where is the normal component…
4-16.2
shear stresstau_"s"
scalar (iso80000-2) quantity describing surface action of a force into a body equal to: where is the tangential…
4-19.1
modulus of elasticity, Young modulusE
quotient of normal stress (t4-16.1) and relative linear strain (t4-17.2):
4-19.2
modulus of rigidity, shear modulusG
quotient of shear stress (t4-16.2) and shear strain (t4-17.3):
4-19.3
modulus of compression, bulk modulusK
negative of the quotient of pressure (t4-14.1) and relative volume strain (t4-17.4):
Part 6: Electromagnetism1 of 85 entries
Part 7: Light and Radiation1 of 66 entries
Part 8: Acoustics5 of 18 entries
8-2.1
static pressurep_"s"
pressure (iso80000-4) in a medium when no sound wave is present
ent
8-2.2
sound pressurep
difference between instantaneous total pressure and static pressure (t8-2.1)
8-7
sound energy densityw
quantity given by: where is mean density (iso80000-4), is the magnitude of the sound particle velocity (t8-4), is sound…
8-12
characteristic impedance of a medium for longitudinal wavesZ_"c"
quotient of sound pressure (t8-2.2) and the component of the sound particle velocity (t8-4) in the direction of the…
ent
8-13
acoustic impedanceZ_"a"
at a surface, quotient of the average sound pressure (t8-2.2) over that surface and the sound volume flow rate (t8-6)…
Part 9: Physical Chemistry3 of 62 entries
9-19
partial pressurep_"X"
for substance in a gaseous mixture, product of amount-of-substance fraction of substance (t9-13) and total pressure…
ent
9-20
fugacitytilde p_"X"
for substance , quantity proportional to the absolute activity, (t9-18), the proportionality factor, which is a…
ent
9-28
osmotic pressureii(Pi)
excess pressure (iso80000-4) required to maintain osmotic equilibrium between a solution and the pure solvent separated…
ent