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  2. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the Kappa number, indicating lignin content in pulp; represents: the Von Kármán constant, describing the velocity profile of turbulent flow; the kappa curve, a two-dimensional algebraic curve [39] the condition number of a matrix in numerical analysis; the connectivity of a graph in graph theory [40] curvature [41]

  3. Delta Kappa Epsilon - Wikipedia

    en.wikipedia.org/wiki/Delta_Kappa_Epsilon

    Delta Kappa Epsilon (ΔΚΕ), commonly known as DKE or Deke, is one of the oldest fraternities in the United States, with fifty-six active chapters and five active colonies across North America. It was founded at Yale College in 1844 by fifteen sophomores who were discontented with the existing fraternity order on campus.

  4. Refractive index - Wikipedia

    en.wikipedia.org/wiki/Refractive_index

    The refractive index, , can be seen as the factor by which the speed and the wavelength of the radiation are reduced with respect to their vacuum values: the speed of light in a medium is v = c/n, and similarly the wavelength in that medium is λ = λ 0 /n, where λ 0 is the wavelength of that

  5. List of social fraternities - Wikipedia

    en.wikipedia.org/wiki/List_of_social_fraternities

    Delta Epsilon Psi: ΔΕΨ: 1998 National NAPA: South Asian Active [t] Delta Kappa: ΔΚ: 1845–1880 Local Yale University: Traditional, Freshmen Inactive [2] Delta Kappa: ΔΚ: 1920: Local Buffalo State College: Traditional Active [u] Delta Kappa Epsilon: ΔΚΕ: 1844 International NIC: Traditional Κηροθεν φιλοι α´ει [sic ...

  6. List of Delta Kappa Epsilon chapters - Wikipedia

    en.wikipedia.org/wiki/List_of_Delta_Kappa...

    The Delta Kappa Epsilon fraternity has 56 active chapters and 5 active colonies. It was originally established at Yale University with the Phi chapter in 1844. [1] [2]Of a total of 56 active chapters, 49 are in the United States, while seven are in Canada – at the University of Toronto, McGill University, the University of British Columbia, the University of Manitoba, the University of ...

  7. Relative permittivity - Wikipedia

    en.wikipedia.org/wiki/Relative_permittivity

    The relative static permittivity, ε r, can be measured for static electric fields as follows: first the capacitance of a test capacitor, C 0, is measured with vacuum between its plates. Then, using the same capacitor and distance between its plates, the capacitance C with a dielectric between the plates is measured.

  8. List of Delta Kappa Epsilon members - Wikipedia

    en.wikipedia.org/wiki/List_of_Delta_Kappa...

    The list of Delta Kappa Epsilon brothers (commonly referred to as Dekes) includes initiated and honorary members of Delta Kappa Epsilon. Delta Kappa Epsilon counts many political, business, sports, education, science, and arts leaders. Listed is a sample of some famous Dekes.

  9. Kappa Delta Epsilon - Wikipedia

    en.wikipedia.org/wiki/Kappa_Delta_Epsilon

    Kappa Delta Epsilon (ΚΔΕ) is a professional fraternity for students in Education. It was organized on March 25, 1933. It was organized on March 25, 1933. [ 1 ] [ 3 ]