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  2. Euler angles - Wikipedia

    en.wikipedia.org/wiki/Euler_angles

    Therefore, this norm would also force a compatible axes convention in the reference system. Tait–Bryan convention is widely used in engineering with different purposes. There are several axes conventions in practice for choosing the mobile and fixed axes, and these conventions determine the signs of the angles. Therefore, signs must be ...

  3. National Beta Club - Wikipedia

    en.wikipedia.org/wiki/National_Beta_Club

    The National Beta Club (often called " Beta Club " or simply " Beta ") is an organization for 4th through 12th grade students in the United States. Its purpose is "to promote the ideals of academic achievement, character, leadership and service among elementary and secondary school students.". [1] Headquartered in Spartanburg, South Carolina ...

  4. List of Alpha Phi Alpha National Conventions - Wikipedia

    en.wikipedia.org/wiki/List_of_Alpha_Phi_Alpha...

    The general conventions and other national conventions of Alpha Phi Alpha ( ΑΦΑ) are as follows: [1] Followed by travel to DC on December 28, 1921 for Initiation of Frederick Douglass into Omega chapter. Special devoted to ending Jim Crow practices in public education. Hosted at Tennessee State University campus.

  5. Gamma Phi Beta - Wikipedia

    en.wikipedia.org/wiki/Gamma_Phi_Beta

    Gamma Phi Beta (ΓΦΒ, also known as GPhi, GPhiB, or Gamma Phi) is an international college sorority. It was founded in Syracuse University in 1874 and was the first of the Greek organizations to call itself a sorority. The term "sorority" was coined for Gamma Phi Beta by Dr. Frank Smalley, a professor at Syracuse University.

  6. Stereoisomerism - Wikipedia

    en.wikipedia.org/wiki/Stereoisomerism

    In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space. [1] [2] This contrasts with structural isomers, which share the same molecular formula, but ...

  7. Beta Phi Alpha - Wikipedia

    en.wikipedia.org/wiki/Beta_Phi_Alpha

    Beta Phi Alpha's Convention Lights is still sung at the close of Delta Zeta national conventions. The gavel which opens Delta Zeta's convention is an artifact of Beta Phi Alpha. It was given to Beta Phi Alpha by Founder Elsa Ludeke. The gavel is inscribed with the names of both sororities' founders and national presidents (Miner, pp. 144– 145).

  8. Kappa Beta Gamma - Wikipedia

    en.wikipedia.org/wiki/Kappa_Beta_Gamma

    Weimar was credited with design of the sorority pin. The immediate aim of the Sorority expressed at its founding was: To Unite the Members in the bond of Sisterhood; to Develop Friendships among the Members During their College Days; to Improve the Members Morally, Socially and Intellectually; and to Foster the Support of College/University, Alma Mater and of God and Country.

  9. Bidding system - Wikipedia

    en.wikipedia.org/wiki/Bidding_system

    Bidding system. A bidding system in contract bridge is the set of agreements and understandings assigned to calls and sequences of calls used by a partnership, and includes a full description of the meaning of each treatment and convention. The purpose of bidding is for each partnership to ascertain which contract, whether made or defeated and ...