Dictionary of food science and nutrition

... Comprehensive Dictionary of Physics Dipak Basu Editor-in-Chief Forthcoming and PUBLISHED VOLUMES Dictionary of Pure and Applied Physics Dipak Basu Dictionary of Material Science and High Energy Physics ... Basu Dictionary of Geophysics, Astrophysics, and Astronomy Richard A Matzner © 20 01 by CRC Press LLC a Volume in the Comprehensive Dictionary of...

Ngày tải lên: 10/08/2014, 11:22

... momentum J2 We require the components of J1 to commute with those of J2 We define J = J1 + J2 , and if states |J M > are angular momentum eigenstates of J2 and Jz , then |J M >= < j2 m2 j1 m1 ... relative angles of the outgoing particles, which leaves two independent variables These may be taken as the energies of two of the particles, E1, E2, and E3 Energy is conserved so...

Ngày tải lên: 10/08/2014, 11:22

... conservation of energy and momentum density of modes The number of modes of the radiation field in an energy range dE The density of modes is a function of the boundary conditions of the space ... average energy of an initial distribution of neutrons will decrease over time, and the width will increase (diffuse): D = λv /3 , where v/λ is the number of collisions...

Ngày tải lên: 10/08/2014, 11:22

... >= kB T Cv energy gap The energy range between the bottom of the conduction band and the top of the valence band in a solid energy level The discrete eigenstates of the Hamiltonian of an atomic ... Stark shift) energy spectrum The set of energy eigenstates of a physical system The set of possible outcomes of a measurement of the energy; also known as the set of...

Ngày tải lên: 10/08/2014, 11:22

... wavelength, g1 and g2 are degeneracies of lower and excited states, N1 and N2 are the number of atoms in the lower and excited states, ν and νo are field and atomic frequency, and δνo is the Lorentzian ... percentage of the uranium isotope 2 35 to about 3% from the natural abundance of the uranium isotopes, which include 234 U at 0 055 %, 35U at 0.72 %, and 38U at 99.2...

Ngày tải lên: 10/08/2014, 11:22

... are made of heterojunctions A heterojunction is made of layers of two different types of materials which are doped by p and n types of atoms For example, layers of n and p type GaAs and AlGaAs ... ratio of the number of events of this type per unit of time and per of unit scatterer to the flux of the incident particles is defined as the inelastic cross-section wh...

Ngày tải lên: 10/08/2014, 11:22

... = m11 m22 is the reduced mass for particles +m of mass m1 and m2 , and r = r1 − r2 are the relative position vectors of particles and Suitable sets of center -of- mass coordinates can be similarly ... in a flow field kinetic energy A form of energy associated with motion Every moving particle has kinetic energy The kinetic energy of a non-relativistic particle with mass...

Ngày tải lên: 10/08/2014, 11:22

... equilibrium left-handed particle A particle whose spin is antiparallel to the direction of its momentum See handedness Lehmann representation In the quantum many-particle problem, a standard technique ... conservation of the lepton number have never been observed level In the context of nuclear or atomic physics, it usually denotes an energy level, namely, one of the allowed (quant...

Ngày tải lên: 10/08/2014, 11:22

... representation of SU(3), is the octet representation of SU(3), and is the singlet representation of SU(3) Each of these representations contains a number of particles equivalent to the number of the ... p in an intrinsic semicon- ductor of ellipisoidal energy surfaces of masses m1 , m2 , and m3 for the conduction band, and m1 , m2 , and m3 for the valence band, is gi...

Ngày tải lên: 10/08/2014, 11:22

... quantization of electric charge in units of the electron charge e, of angular momentum in units of the Planck constant h/2π , and of energy of the electromagnetic field in units of hν, where ν ... the number of degrees of freedom of a thermodynamic system, f , the number of intensive parameters to be varied, I , the number of phases, φ, the number of components, c...

Ngày tải lên: 10/08/2014, 11:22

... energy of a particle and produces a signal that is proportional to the absorbed energy The system of deposition of energy depends on the kind of detected particles High energy photons deposit energy ... wave function A function of the coordinates of the particles of a system and of time which is a solution of the Schrödinger equation and which determines th...

Ngày tải lên: 10/08/2014, 11:22

... vacuum modes standard theory and standard model of particle physics According to this theory, all matter is made up of quarks and leptons, which interact by the exchange of gauge particles There ... Intrinsic angular momentum of an elementary particle or nucleus, which is independent of the motion of the center of mass of the particle spin–flip scattering Scattering of...

Ngày tải lên: 10/08/2014, 11:22

... ) Here, i and f denote initial and final ¯ states, Vint and ω0 denote the amplitude and frequency of the excitation, and Ei,f is the energy of the initial and final states Depiction of a transmission ... attack of the thin airfoil theta particle (meson) Discovered in the Crystal Ball collaboration among products of decay of psi particles Ii has a mass of 1640 MeV an...

Ngày tải lên: 10/08/2014, 11:22

... the tension of the strings Each vibrational mode of strings corresponds to some particle The vibrational frequency of the mode of the string determines the energy of that particle and, hence, ... electromagnetic interaction of charged beam particles and metallic surfaces of the beam chamber These fields can change trajectory of beam particles Wake fields depend on geometry...

Ngày tải lên: 10/08/2014, 11:22

... numbers are: N = 2, 8, 20 , 28 , 50, 82, 126 Z = 2, 8, 20 , 28 , 80, 82 © 20 01 by CRC Press LLC Nuclei that have both magic numbers are called double magic, e.g., H e2 , 16 O , and 20 8 P b 82 shell models ... energy of a particle and produces a signal that is proportional to the absorbed energy The system of deposition of energy depends on the kind of detecte...

Ngày tải lên: 10/08/2014, 20:20