User:Jshflynn/The Structure/Natural
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Physical forces | |
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Hypothetical forces | |
Major branches of physics | |
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Divisions | |
Approaches | |
Classical | |
Modern | |
Interdisciplinary | |
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Elementary |
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Composite |
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Standard atomic weight Ar, std(E)[1]
- Ca: 40.078 — Abridged value (uncertainty omitted here)[2]
- Po: [209] — mass number of the most stable isotope
Hydrocarbons (only C and H) | |||||||||||||||
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Only carbon, hydrogen, and oxygen (only C, H and O) |
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Only one element, not being carbon, hydrogen, or oxygen (one element, not C, H or O) |
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Human systems and organs | |||||||
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Musculoskeletal system |
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Circulatory system |
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Nervous system | |||||||
Integumentary system | |||||||
Haematopoietic and immune systems | |||||||
Respiratory system | |||||||
Digestive system | |||||||
Urinary system | |||||||
Reproductive system | |||||||
Endocrine system |
Anatomy and morphology | ||
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Fields | ||
Bacteria and fungi | ||
Protists | ||
Plants | ||
Invertebrates | ||
Mammals | ||
Other vertebrates | ||
Glossaries | ||
Related topics | ||
Atmosphere | |
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Climate | |
Continents | |
Culture and society | |
Environment | |
Geodesy | |
Geophysics | |
Geology | |
Oceans | |
Planetary science | |
Overviews | ||
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History of geology | ||
Composition and structure | ||
Historical geology | ||
Dynamic Earth | ||
Water | ||
Geodesy | ||
Geophysics | ||
Applications | ||
Occupations | ||
Major subfields of astronomy | |
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General | |||||||
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Human spaceflight |
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Spacecraft | |||||||
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Space launch | |||||||
Ground segment | |||||||
Disciplines | |||||||||||||||
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Main topics |
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Planetary habitability |
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Space missions |
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Institutions and programs |
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- ^ Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
- ^ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; Böhlke, John K.; Chesson, Lesley A.; Coplen, Tyler B.; Ding, Tiping; Dunn, Philip J. H.; Gröning, Manfred; Holden, Norman E.; Meijer, Harro A. J. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry. doi:10.1515/pac-2019-0603. ISSN 1365-3075.