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| Physical constants [1] | ||||
| Constant description | Name | Value | Dimension | Domain |
| Gravitational acceleration [2] | Qg% | 9.80665 | [m/s2] | Gravitation |
| Gravitational constant [3] | QG | 6.673*10-11 | [N*m2/kg2] | Gravitation |
| Avogadro constant [4] | QNA | 6.023*1023 | [1/mol] | Quantity of matter |
| Gas constant [5] | QR% | 8.314 | [J*K-1/mol] | Thermodynamics |
| Boltzmann constant [6] | Qk | 1.381*10-23 | [J/K] | Radiation |
| Stefan Boltxman constant [7] | QSigma | 5.670*10-8 | [W*m-2/K4] | Radiation |
| Rydberg constant [8] | QRhc | 1.097*107 | [1/m] | Physics |
| Planck constant [9] | Qh% | 6.626*10-34 | [J*s] | Quantum mechanics |
| Light speed in vacuum [10] | Qc% | 2.998*108 | [m/s] | Light speed |
| Charge of proton [11] | Qe | 1.602*10-19 | [C] | Quantum mechanics |
| Mass of electron [12] | QMe | 9.109*10-31 | [kg] | Quantum mechanics |
| Rest energy of electron [13] | QEe | 0.511 | [MeV] | Quantum mechanics |
| One atomic mass unit [14] | Qu | 1.66*10-27 | [kg] | Quantity of matter |
| Atomic mass unit energy equivalent [15] | QEu | 931.5 | [MeV] | Nuclear physics |
| Electric constant [16] | QEps0 | 8.854*10-12 | [F/m] | Electricity |
| Magnetic constant [17] | QMu0 | 4*PI*10-7 | [H/m] | Magnetism |
| Bohr magneton constant [18] | QMuB | 9.274*10-24 | [A*m2] | Nuclear physics |
| Nuclear magneton constant [19] | QMuN | 5.051*10-27 | [A*m2] | Nuclear physics |
| Fine structure constant [20] | QAlpha | 7.297*10-3 | [-] | Physics |
| Compton wavelength constant of electron [21] | QLambdaC | 2.426*10-12 | [m] | Quantum mechanics |
| Bohr radius constant [22] | Qa0 | 5.2918*10-11 | [m] | Nuclear physics |
| Carriage return-line feed string constant [23] | Qcrlf | CHR$(13)+CHR$(10) | [Str] | Standard string value |
| Use for version management | ||||
| Constant description | Name | Value | Domain | |
| Indication of the knowledge base version (automatically added to any new knowledge base). | QKnowledgebaseVersion | 1.0 by default changable by KE | [Str] | Quaestor |
| Solution title (automatically added for Taxonomies) | QSolutionTitle | - | [Str] | Quaestor |
| Use of binary data | ||||
| Constant description | Name | Value | Domain | |
| Binary database object | QBinaries | - | [Obj] | Quaestor |
| Binary database binary value | QBinary | Part of QBinary | [Str] | Quaestor |
| Binary database binary ID | QBinaryID | Part of QBinary | [Str] | Quaestor |
| Binary database default value | QBackground | Part of QBinary | [Str] | Quaestor |
| Binary database number of values | QNrOfBinaries | Part of QBinary | [#] | Quaestor |
| Use of taxonomies | ||||
| Constant description | Name | Value | Domain | |
| Taxonomy database | QTaxonomy | - | [Obj] | Quaestor |
| Taxonomy ID | QTaxonomyID | Part of QTaxonomy | [Str] | Quaestor |
| Entity object | QEntity | Part of QTaxonomy | [Obj] | Quaestor |
| Entity value comment | QEntityCom | Part of QTaxonomy | [Str] | Quaestor |
| Entity object data & attributes | QEntityData | Part of QTaxonomy | [Str] | Quaestor |
| Entity description document or image | QEntityDoc | Part of QTaxonomy | [Str] | Quaestor |
| Entity ID | QEntityID | Part of QTaxonomy | [Str] | Quaestor |
| Entity index | QEntityIndex | Part of QTaxonomy | [#] | Quaestor |
| Entity input values | QEntityInput | Part of QTaxonomy | [Str] | Quaestor |
| Entity name | QEntityName | Part of QTaxonomy | [Str] | Quaestor |
| Entity object reference | QEntityRef | Part of QTaxonomy | [Str] | Quaestor |
| Entity parameter or expression | QFrame | Part of QTaxonomy | [Str] | Quaestor |
| Entity parameter and expression data & attributes | QFrameData | Part of QTaxonomy | [Str] | Quaestor |
| Entity parameter and expression reference | QFrameRef | Part of QTaxonomy | [Str] | Quaestor |
| Entity parameter and expression properties | QFrameProp | Part of QTaxonomy | [Str] | Quaestor |
| Entity knowledge | QFrames | Part of QTaxonomy | [Obj] | Quaestor |
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