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  2. Cubic foot - Wikipedia

    en.wikipedia.org/wiki/Cubic_foot

    The IEEE symbol for the cubic foot per second is ft 3 /s. [1] The following other abbreviations are also sometimes used: ft 3 /sec; cu ft/s; cfs or CFS; cusec; second-feet; The flow or discharge of rivers, i.e., the volume of water passing a location per unit of time, is commonly expressed in units of cubic feet per second or cubic metres per second.

  3. Crystal field theory - Wikipedia

    en.wikipedia.org/wiki/Crystal_field_theory

    CFT was developed by physicists Hans Bethe [1] and John Hasbrouck van Vleck [2] in the 1930s. CFT was subsequently combined with molecular orbital theory to form the more realistic and complex ligand field theory (LFT), which delivers insight into the process of chemical bonding in transition metal complexes.

  4. Cardy formula - Wikipedia

    en.wikipedia.org/wiki/Cardy_formula

    where R is the radius of a n-dimensional sphere at time t. The radiation is represented by a (n+1)-dimensional CFT. The entropy of that CFT is then given by the formula = (), where E c is the Casimir effect, and E the total energy. The above reduced formula gives the maximal entropy

  5. Acre-foot - Wikipedia

    en.wikipedia.org/wiki/Acre-foot

    As the name suggests, an acre-foot is defined as the volume of one acre of surface area to a depth of one foot.. Since an acre is defined as a chain by a furlong (i.e. 66 ft × 660 ft or 20.12 m × 201.17 m), an acre-foot is 43,560 cubic feet (1,233.5 m 3).

  6. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    This translates to a hoppus foot being equal to 1.273 cubic feet (2,200 in 3; 0.0360 m 3). The hoppus board foot, when milled, yields about one board foot . The volume yielded by the quarter-girth formula is 78.54% of cubic measure (i.e. 1 ft 3 = 0.7854 h ft; 1 h ft = 1.273 ft 3 ).

  7. Two-dimensional conformal field theory - Wikipedia

    en.wikipedia.org/wiki/Two-dimensional_conformal...

    While a CFT might conceivably exist only on a given Riemann surface, its existence on any surface other than the sphere implies its existence on all surfaces. [1] [2] Given a CFT, it is indeed possible to glue two Riemann surfaces where it exists, and obtain the CFT on the glued surface. [1] [3] On the other hand, some CFTs exist only on the ...

  8. Standard cubic foot - Wikipedia

    en.wikipedia.org/wiki/Standard_cubic_foot

    Common units of gas volumes include ccf (hundred standard cubic feet), Mcf (thousand standard cubic feet), and MMcf (million standard cubic feet). [3] The "M" refers to the Roman numeral for thousand, while a double "M" ("MM") represent one thousand thousands, or one million.

  9. AdS/CFT correspondence - Wikipedia

    en.wikipedia.org/wiki/AdS/CFT_correspondence

    In the AdS/CFT correspondence, one considers, in addition to a theory of quantum gravity, a certain kind of quantum field theory called a conformal field theory. This is a particularly symmetric and mathematically well behaved type of quantum field theory. [ 17 ]