F (disambiguation)
F is the sixth letter of the Latin alphabet. F may also refer to: == Science and technology == === Mathematics === F or f, the number 15 in hexadecimal and higher positional systems pFq, the hypergeometric function F-distribution, a continuous probability distribution F-test, a statistical test f, SI prefix femto, factor 10−15 F, Fibonacci number === Computing and engineering === F (programming language), a subset of Fortran 95 F Sharp (programming language), a functional and object-oriented language for the .NET platform F* (programming language), a dependently typed functional language for the .NET platform F-measure, the harmonic mean of precision and recall f, in programming languages often used to represent the floating point F connector, used for inlet in cable modems F crimp, a type of solderless electrical connection F band (NATO), a radio frequency band from 3 to 4 GHz F band (waveguide), a millimetre wave band from 90 to 140 GHz === Physics === °F, degree on the Fahrenheit temperature scale F, for farad, a unit for electric capacitance F or ℱ, the Faraday constant f, focal length of a lens f-number (sometimes called f-ratio, f-stop, or written f/), the focal length divided by the aperture diameter F → {\displaystyle {\vec {F}}} , F, F, force f, frequency F (or A), Helmholtz Free Energy F, the electromagnetic field tensor in electromagnetism Often generalized to include the field tensors of other interactions, as in i.e.