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Details Title: Rote for PA01 Description: Things you should know by heart! Total Flash Cards: 14 Created: 08/26/2006 06:29:58	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term meson Definition A meson is a hadron that is composed of a quark and an antiquark. e.g. a pion or a kaon Term baryon Definition A baryon is a hadron that is composed of thee quarks. It has a baryon number of +1. e.g. proton or neutron Term anti-baryon Definition An anti-baryon is a hadron that is composed of three anti-quarks. It has a baryon number of -1. e.g. anti-proton or anti-neutron Term lepton Definition A lepton is a fundamental particle (cannot be broken down into anything simpler). It has a lepton number of +1. e.g. electron, neutrino Term anti-lepton Definition An anti-lepton is a fundamental anti-particle (cannot be broken down into anything simpler). It has a lepton number of -1. e.g. positron, anti-neutrino Term critical angle Definition The critical angle is the angle of incidence, at a dense to rare boundary, which produces an angle of refraction of 90o. Term electron volt Definition An electron volt is the kinetic energy gained by an electron when it is accelerated across a potential difference of one volt. Term The law of reflection Definition The angle of incidence equals the angle of reflection. The incident ray, the reflected ray and the normal at the point of incidence are all in the same plane. Term The first law of refraction Definition The incident ray, the refracted ray and the normal at the point of incidence are all in the same plane. Term The second law of refraction or Snell’s Law Definition For rays of any particular wavelength, at the boundary between any two given materials, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. Term What is the wave equation? Definition c = f x lambda where f = frequency (Hz); c = speed of light (m/s); lambda = wavelength (m)) Term What is the deBroglie equation? Definition lambda dB = h/p where: h = Planck constant p = momentum of the particle (= mv where m is the relativistic mass and v is the velocity) lambda dB = deBroglie wavelength Term What is the Einstein electromagnetic wave equation? Definition E = hf = hc/lambda where: h = Planck constant f = frequency (Hz) c = speed of light (m/s) lambda = wavelength (m) Term What is Einstein’s photoelectric effect equation? Definition hf = psi + ½ mv2 where: hf = the energy of each incident photon (see above) psi = the work function of the surface (the energy which binds each electron to the surface) ½ mv2= the maximum kinetic energy of an ejected electron (many interact on their way out and therefore have less energy than this!) – you MUST put the word maximum in!!!