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  2. First principle - Wikipedia

    en.wikipedia.org/wiki/First_principle

    In philosophy and science, a first principle is a basic proposition or assumption that cannot be deduced from any other proposition or assumption. First principles in philosophy are from first cause [1] attitudes and taught by Aristotelians, and nuanced versions of first principles are referred to as postulates by Kantians. [2]

  3. Laws of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/Laws_of_thermodynamics

    The first established thermodynamic principle, which eventually became the second law of thermodynamics, was formulated by Sadi Carnot in 1824 in his book Reflections on the Motive Power of Fire. By 1860, as formalized in the works of scientists such as Rudolf Clausius and William Thomson , what are now known as the first and second laws were ...

  4. First law of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/First_law_of_thermodynamics

    The first law of thermodynamics is a formulation of the law of conservation of energy in the context of thermodynamic processes.The law distinguishes two principal forms of energy transfer, heat and thermodynamic work, that modify a thermodynamic system containing a constant amount of matter.

  5. Principle - Wikipedia

    en.wikipedia.org/wiki/Principle

    To "act on principle" is to act in accordance with one's moral ideals. [7] Principles are absorbed in childhood through a process of socialization. There is a presumption of liberty of individuals that is restrained. Exemplary principles include First, do no harm, the Golden Rule and the Doctrine of the Mean.

  6. Hund's rules - Wikipedia

    en.wikipedia.org/wiki/Hund's_rules

    Hund's first rule states that the lowest energy atomic state is the one that maximizes the total spin quantum number for the electrons in the open subshell. The orbitals of the subshell are each occupied singly with electrons of parallel spin before double occupation occurs.

  7. Philosophiæ Naturalis Principia Mathematica - Wikipedia

    en.wikipedia.org/wiki/Philosophiæ_Naturalis...

    The first rule is explained as a philosophers' principle of economy. The second rule states that if one cause is assigned to a natural effect, then the same cause so far as possible must be assigned to natural effects of the same kind: for example, respiration in humans and in animals, fires in the home and in the Sun, or the reflection of ...

  8. Wikipedia:The rules are principles - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:The_rules_are...

    The principle underlying the behavioral rules allows us to work towards a healthy collaborative environment for contributors. The principle underlying our non-free content criteria is intended to ensure we protect the mission of a free encyclopedia. The rules exist to support Wikipedia's mission and should be interpreted in that context.

  9. Wikipedia:The first rule of Wikipedia - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:The_first_rule...

    The fifth rule of Wikipedia is: You can not talk about Wikipedia when editing Wikipedia. The sixth rule of Wikipedia is: There is no rule six. The seventh rule of Wikipedia is: Do not look at Wikipedia and touch your leg while eating a pancake with apples, nuts, and berries. The eighth rule of Wikipedia is: Do not look at Wikipedia. The ninth ...