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elementary beam

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  • Beam me up, Scotty — Beam me up, Scotty! is a catch phrase that made its way into pop culture from the science fiction television series . It comes from the command Captain Kirk gives his transporter chief, Montgomery Scotty Scott, when he needs to transport back to… …   Wikipedia

  • Joseph F. Beam — (b. December 30, 1954 in Philadelphia, Pennsylvania d. December 27, 1988 in Philadelphia) was an African American gay rights activist and author who worked to foster greater acceptance of gay life in the black community by relating the gay… …   Wikipedia

  • Crossed molecular beam — experiments are chemical experiments where two beams of atoms or molecules are collided together to elucidate the dynamics of the chemical reaction, and can detect individual reactive collisions.[1] Technique In a crossed molecular beam apparatus …   Wikipedia

  • colliding beam accelerator — Particle accelerator Par ti*cle ac*cel er*a*tor, n. (Physics) A large and expensive scientific instrument used by physicists to accelerate elementary particles (such as protons or electrons) to speeds near that of light, for the purpose of… …   The Collaborative International Dictionary of English

  • Bending stiffness — The bending stiffness E I of a beam (or a plate) relates the applied bending moment to the resulting deflection of the beam. It is the product of the elastic modulus E of the beam material and the area moment of inertia I of the beam cross… …   Wikipedia

  • Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

  • subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… …   Universalium

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

  • Atom — The atom is the smallest unit of an element that retains the chemical properties of that element. An atom has an electron cloud consisting of negatively charged electrons surrounding a dense nucleus. The nucleus contains positively charged… …   Wikipedia

  • atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …   Universalium

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