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  2. Theory of everything - Wikipedia

    en.wikipedia.org/wiki/Theory_of_everything

    A theory of everything (TOE), final theory, ultimate theory, unified field theory, or master theory is a hypothetical singular, all-encompassing, coherent theoretical framework of physics that fully explains and links together all aspects of the universe. [1]: 6 Finding a theory of everything is one of the major unsolved problems in physics. [2 ...

  3. Theory of everything (philosophy) - Wikipedia

    en.wikipedia.org/wiki/Theory_of_everything...

    In philosophy, a theory of everything (ToE) is an ultimate, all-encompassing explanation or description of nature or reality. [1] [2] [3] Adopting the term from physics, where the search for a theory of everything is ongoing, philosophers have discussed the viability of the concept and analyzed its properties and implications.

  4. Cell theory - Wikipedia

    en.wikipedia.org/wiki/Cell_theory

    This was a major advance in the field of biology since little was known about animal structure up to this point compared to plants. From these conclusions about plants and animals, two of the three tenets of cell theory were postulated. 1. All living organisms are composed of one or more cells 2. The cell is the most basic unit of life

  5. List of superseded scientific theories - Wikipedia

    en.wikipedia.org/wiki/List_of_superseded...

    These theories that are no longer considered the most complete representation of reality but remain useful in particular domains or under certain conditions. For some theories, a more complete model is known, but for practical use, the coarser approximation provides good results with much less calculation.

  6. Grand Unified Theory - Wikipedia

    en.wikipedia.org/wiki/Grand_Unified_Theory

    These theories predict that for each electroweak Higgs doublet, there is a corresponding colored Higgs triplet field with a very small mass (many orders of magnitude smaller than the GUT scale here). In theory, unifying quarks with leptons, the Higgs doublet would also be unified with a Higgs triplet. Such triplets have not been observed.

  7. Category:Biology theories - Wikipedia

    en.wikipedia.org/wiki/Category:Biology_theories

    Obsolete biology theories (6 C, 29 P) Pages in category "Biology theories" The following 42 pages are in this category, out of 42 total.

  8. Evolution as fact and theory - Wikipedia

    en.wikipedia.org/wiki/Evolution_as_fact_and_theory

    Professor of biology Jerry Coyne sums up biological evolution succinctly: [3]. Life on Earth evolved gradually beginning with one primitive species – perhaps a self-replicating molecule – that lived more than 3.5 billion years ago; it then branched out over time, throwing off many new and diverse species; and the mechanism for most (but not all) of evolutionary change is natural selection.

  9. Aristotle's biology - Wikipedia

    en.wikipedia.org/wiki/Aristotle's_biology

    Aristotle's biology is the theory of biology, grounded in systematic observation and collection of data, mainly zoological, embodied in Aristotle's books on the science. Many of his observations were made during his stay on the island of Lesbos , including especially his descriptions of the marine biology of the Pyrrha lagoon, now the Gulf of ...