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  3. Rationalism - Wikipedia

    en.wikipedia.org/wiki/Rationalism

    Rationalism – as an appeal to human reason as a way of obtaining knowledge – has a philosophical history dating from antiquity.The analytical nature of much of philosophical enquiry, the awareness of apparently a priori domains of knowledge such as mathematics, combined with the emphasis of obtaining knowledge through the use of rational faculties (commonly rejecting, for example, direct ...

  4. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    As a consequence, log b (x) diverges to infinity (gets bigger than any given number) if x grows to infinity, provided that b is greater than one. In that case, log b (x) is an increasing function. For b < 1, log b (x) tends to minus infinity instead. When x approaches zero, log b x goes to minus infinity for b > 1 (plus infinity for b < 1 ...

  5. History of logarithms - Wikipedia

    en.wikipedia.org/wiki/History_of_logarithms

    As the common log of ten is one, of a hundred is two, and a thousand is three, the concept of common logarithms is very close to the decimal-positional number system. The common log is said to have base 10, but base 10,000 is ancient and still common in East Asia.

  6. Portal:Mathematics - Wikipedia

    en.wikipedia.org/wiki/Portal:Mathematics

    The manipulations of the Rubik's Cube form the Rubik's Cube group. In mathematics, a group is a set with an operation that associates an element of the set to every pair of elements of the set (as does every binary operation) and satisfies the following constraints: the operation is associative, it has an identity element, and every element of the set has an inverse element.

  7. Snell's law - Wikipedia

    en.wikipedia.org/wiki/Snell's_law

    Rejecting Descartes' solution, Pierre de Fermat arrived at the same solution based solely on his principle of least time. Descartes assumed the speed of light was infinite, yet in his derivation of Snell's law he also assumed the denser the medium, the greater the speed of light. Fermat supported the opposing assumptions, i.e., the speed of ...

  8. Gilles de Roberval - Wikipedia

    en.wikipedia.org/wiki/Gilles_de_Roberval

    Between Roberval and René Descartes there existed a feeling of ill-will, [5] [6] owing to the jealousy aroused in the mind of the former by the criticism that Descartes offered to some of the methods employed by him and by Pierre de Fermat; and this led him to criticize and oppose the analytical methods that Descartes introduced into geometry ...

  9. Archimedes' heat ray - Wikipedia

    en.wikipedia.org/wiki/Archimedes'_heat_ray

    René Descartes rejected it as false, [2] a test was conducted by Comte de Buffon (circa 1747), documented in the paper titled "Invention De Miroirs Ardens, Pour Brusler a Une Grande Distance", and an experiment by John Scott, documented in an 1867 paper. [3] A test of the Archimedes heat ray was carried out in 1973 by the Greek scientist ...