The Mole, Avogadro’s Number and Albert Einstein
The molea concept and Avogadro’s number are discussed as sought by Albert Einstein in his PhD thesis of 1905. Einstein would probably have regarded the metric system of units based on centimetre-gram-second (cgs) preferable to today’s SI system and specifically he would have rejected a recent SI sug...
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| Format: | Article |
| Language: | English |
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World Scientific Publishing
2021-06-01
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| Series: | Molecular Frontiers Journal |
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| Online Access: | https://www.worldscientific.com/doi/10.1142/S2529732521400010 |
| _version_ | 1818157437922836480 |
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| author | Bengt Nordén |
| author_facet | Bengt Nordén |
| author_sort | Bengt Nordén |
| collection | DOAJ |
| description | The molea concept and Avogadro’s number are discussed as sought by Albert Einstein in his PhD thesis of 1905. Einstein would probably have regarded the metric system of units based on centimetre-gram-second (cgs) preferable to today’s SI system and specifically he would have rejected a recent SI suggestion to redefine Avogadro’s constant as based on a nonatomistic continuum description of matter. He would probably also have preferred keeping a dualistic definition of mole able of bookkeeping both mass and number of particles: we advocate that here and call it the ‘Einstein Definition’ and as Avogadro’s number we shall adopt an integer, the cube of 84446888 as suggested by Fox and Hill, providing also a definition of the kilogram based on the atomic mass of the carbon 12 isotope. Einstein was the first to explain the microscopic movements of pollen grains reported by Robert Brown in 1828 and his explanation that the particles move as a result of an unequal number of water molecules bumping into them from opposite sides was what finally made the scientific world accept the atom theory in its modern shape. In a cosmic diffusion analogy, pollen or bacterial spores moving randomly in outer space driven by the solar winds between solar systems can be envisaged. Applying Einstein’s diffusion theory, one can argue that life might have emerged from far outside of our planet from billions of solar systems, though not from outside of our Milky Way galaxy. As a curiosity we note that the number of solar systems (stars) in the Universe has been estimated to be of the order of Avogadro’s number. aEtymology: “Mole” was derived from French Molécule (extremely small particle) or diminutive from Greek [Formula: see text] (molos= substance). In analogy with atom, derived from Greek atomos or atemnein, uncleavable, we may thus interpret molecule as the smallest part that a substance can be divided into without losing its chemical character. |
| first_indexed | 2024-12-11T15:14:11Z |
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| issn | 2529-7325 2529-7333 |
| language | English |
| last_indexed | 2024-12-11T15:14:11Z |
| publishDate | 2021-06-01 |
| publisher | World Scientific Publishing |
| record_format | Article |
| series | Molecular Frontiers Journal |
| spelling | doaj.art-990f4bd32213452586979360fa7048602022-12-22T01:00:39ZengWorld Scientific PublishingMolecular Frontiers Journal2529-73252529-73332021-06-010501n02667810.1142/S2529732521400010The Mole, Avogadro’s Number and Albert EinsteinBengt Nordén0Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, SwedenThe molea concept and Avogadro’s number are discussed as sought by Albert Einstein in his PhD thesis of 1905. Einstein would probably have regarded the metric system of units based on centimetre-gram-second (cgs) preferable to today’s SI system and specifically he would have rejected a recent SI suggestion to redefine Avogadro’s constant as based on a nonatomistic continuum description of matter. He would probably also have preferred keeping a dualistic definition of mole able of bookkeeping both mass and number of particles: we advocate that here and call it the ‘Einstein Definition’ and as Avogadro’s number we shall adopt an integer, the cube of 84446888 as suggested by Fox and Hill, providing also a definition of the kilogram based on the atomic mass of the carbon 12 isotope. Einstein was the first to explain the microscopic movements of pollen grains reported by Robert Brown in 1828 and his explanation that the particles move as a result of an unequal number of water molecules bumping into them from opposite sides was what finally made the scientific world accept the atom theory in its modern shape. In a cosmic diffusion analogy, pollen or bacterial spores moving randomly in outer space driven by the solar winds between solar systems can be envisaged. Applying Einstein’s diffusion theory, one can argue that life might have emerged from far outside of our planet from billions of solar systems, though not from outside of our Milky Way galaxy. As a curiosity we note that the number of solar systems (stars) in the Universe has been estimated to be of the order of Avogadro’s number. aEtymology: “Mole” was derived from French Molécule (extremely small particle) or diminutive from Greek [Formula: see text] (molos= substance). In analogy with atom, derived from Greek atomos or atemnein, uncleavable, we may thus interpret molecule as the smallest part that a substance can be divided into without losing its chemical character.https://www.worldscientific.com/doi/10.1142/S2529732521400010MoleAvogadroEinstein DefinitionsEinstein DiffusionProblematic SI UnitsChemical Bond |
| spellingShingle | Bengt Nordén The Mole, Avogadro’s Number and Albert Einstein Molecular Frontiers Journal Mole Avogadro Einstein Definitions Einstein Diffusion Problematic SI Units Chemical Bond |
| title | The Mole, Avogadro’s Number and Albert Einstein |
| title_full | The Mole, Avogadro’s Number and Albert Einstein |
| title_fullStr | The Mole, Avogadro’s Number and Albert Einstein |
| title_full_unstemmed | The Mole, Avogadro’s Number and Albert Einstein |
| title_short | The Mole, Avogadro’s Number and Albert Einstein |
| title_sort | mole avogadro s number and albert einstein |
| topic | Mole Avogadro Einstein Definitions Einstein Diffusion Problematic SI Units Chemical Bond |
| url | https://www.worldscientific.com/doi/10.1142/S2529732521400010 |
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