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@@ -118,14 +117,13 @@ standard library package ISQAcoustics {
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* remarks: The definition is limited to small-amplitude acoustic disturbances such that the magnitude of `vec(u)` is small relative to the phase speed (ISO 80000-3) of sound.
@@ -139,11 +137,10 @@ standard library package ISQAcoustics {
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* remarks: The definition is limited to small-amplitude acoustic disturbances such that the magnitude of `vec(u)` is small relative to the phase speed (ISO 80000-3) of sound.
* source: item 10-9.1 magnetic dipole moment (vector)
@@ -303,14 +303,12 @@ standard library package ISQAtomicNuclear {
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* remarks: For an atom or nucleus, this energy is quantized and can be written as: `W` = `g μ_x M B` where `g` is the appropriate `g` factor (item 10-14.1 or item 10-14.2), `μ_x` is mostly the Bohr magneton or nuclear magneton (item 10-9.2 or item 10-9.3), `M` is magnetic quantum number (item 10-13.4), and `B` is magnitude of the magnetic flux density. See also IEC 80000-6.
* source: item 10-11 total angular momentum (vector)
@@ -443,14 +439,12 @@ standard library package ISQAtomicNuclear {
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* remarks: In atomic and nuclear physics, orbital angular momentum is usually denoted by `vec(l)` or `vec(L)`. The magnitude of `vec(J)` is quantized so that: `J^2 = ℏ^2 j (j+1)` where `j` is the total angular momentum quantum number (item 10-13.6). Total angular momentum and magnetic dipole moment have the same direction. `j` is not the magnitude of the total angular momentum `vec(J)` but its projection onto the quantization axis, divided by `ℏ`.
* source: item 10-48 particle current density (vector)
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* remarks: Usually the word "particle" is replaced by the name of a specific particle, for example proton current. Symbol `vec(S)` is recommended when there is a possibility of confusion with the symbol `vec(J)` for electric current density. For neutron current, the symbol `vec(J)` is generally used. The distribution functions expressed in terms of speed and energy, `vec(J_v)` and `vec(J_E)`, are related to `vec(J)` by: `vec(J) = int vec(J_v) dv = int vec(J_E) dE`. The directional distribution of the particle fluence rate is also denoted as particle radiance.
Copy file name to clipboardExpand all lines: org.omg.sysml.xpect.tests/library.domain/Quantities and Units/ISQChemistryMolecular.sysml
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@@ -2,8 +2,8 @@ standard library package ISQChemistryMolecular {
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doc
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/*
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* International System of Quantities and Units
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* Generated on 2022-08-07T14:44:27Z from standard ISO-80000-9:2019 "Physical chemistry and molecular physics"
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* see also https://www.iso.org/obp/ui/#iso:std:iso:80000:-9:ed-2:v1:en
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* Generated on 2025-03-13T15:00:05Z from standard ISO-80000-9:2019 "Physical chemistry and molecular physics"
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* see also https://www.iso.org/standard/64979.html
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*
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* Note 1: In documentation comments, AsciiMath notation (see http://asciimath.org/) is used for mathematical concepts,
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* with Greek letters in Unicode encoding. In running text, AsciiMath is placed between backticks.
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* application domain: generic
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* name: SpecificOpticalRotatoryPower
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* quantity dimension: L^2*M^-1
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* measurement unit(s): rad*m^2/kg^1, kg^-1*m^2
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* measurement unit(s): rad*m^2/kg, kg^-1*m^2
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* tensor order: 0
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* definition: angle `α` of optical rotation (item 9-47), multiplied by the quotient of cross-sectional area `A` (ISO 80000-3) of a linearly polarized light beam and the mass `m` (ISO 80000-4) of the optically active component in the path of the beam: `α_m = (α A)/m`
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