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  2. Three Rs (animal research) - Wikipedia

    en.wikipedia.org/wiki/Three_Rs_(animal_research)

    In 1954, the Universities Federation for Animal Welfare (UFAW) decided to sponsor systematic research on the progress of humane techniques in the laboratory. [2] In October of that year, William Russell, described as a brilliant young zoologist who happened to be also a psychologist and a classical scholar, and Rex Burch, a microbiologist, were appointed to inaugurate a systematic study of ...

  3. The three Rs - Wikipedia

    en.wikipedia.org/wiki/The_three_Rs

    The skills themselves are alluded to in St. Augustine's Confessions: Latin: ...legere et scribere et numerare discitur 'learning to read, and write, and do arithmetic'. [3]

  4. 3R - Wikipedia

    en.wikipedia.org/wiki/3R

    3R or three Rs may refer to: The three Rs , the basic elements of a primary school curriculum: reading, 'riting (writing), and 'rithmetic (arithmetic) The three Rs, the waste management hierarchy : reduce, reuse, and recycle

  5. Specific heat capacity - Wikipedia

    en.wikipedia.org/wiki/Specific_heat_capacity

    However, good approximations can be made for gases in many states using simpler methods outlined below. For many solids composed of relatively heavy atoms (atomic number > iron), at non-cryogenic temperatures, the heat capacity at room temperature approaches 3R = 24.94 joules per kelvin per mole of atoms (Dulong–Petit law, R is the gas constant).

  6. Dulong–Petit law - Wikipedia

    en.wikipedia.org/wiki/Dulong–Petit_law

    An equivalent statement of the Dulong–Petit law in modern terms is that, regardless of the nature of the substance, the specific heat capacity c of a solid element (measured in joule per kelvin per kilogram) is equal to 3R/M, where R is the gas constant (measured in joule per kelvin per mole) and M is the molar mass (measured in kilogram per mole).

  7. Rule of three (statistics) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(statistics)

    The rule can then be derived [2] either from the Poisson approximation to the binomial distribution, or from the formula (1−p) n for the probability of zero events in the binomial distribution. In the latter case, the edge of the confidence interval is given by Pr( X = 0) = 0.05 and hence (1− p ) n = .05 so n ln (1– p ) = ln .05 ≈ −2.996.

  8. FIA Formula 3 Championship - Wikipedia

    en.wikipedia.org/wiki/FIA_Formula_3_Championship

    The FIA Formula 3 Championship is a third-tier international single-seater racing championship and organised by the Fédération Internationale de l'Automobile (FIA). The championship launched in 2019 as a feeder series for the FIA Formula 1 World Championship and FIA Formula 2 Championships.

  9. SQ3R - Wikipedia

    en.wikipedia.org/wiki/SQ3R

    SQRRR or SQ3R is a reading comprehension method named for its five steps: survey, question, read, recite, and review.The method was introduced by Francis P. Robinson in his 1941 book Effective Study.