R/e-cycling in modern Territories
γυρισε τη πεταλουδα στο στερνο τηςκαι αρχισε να τον τυλιγει μεσα τηςhttp://happidrome.files.wordpress.com/2009/06/1944_colossus_large.jpg
http://en.wikipedia.org/wiki/QED_(book)1. IntroductionIn the first lecture, Feynman describes the basic properties of photons which acts as a gentle lead-in to the subject (as he colloquially stated before that a science lecture is boring if either it's not using layman terms or saying something upside down). Feynman discusses how to measure the probability that a photon will reflect or transmit through a partially reflective piece of glass.2. PhotonsParticles of LightIn the second lecture, Feynman looks at the different paths a photon can take as it travels from one point to another and how this affects phenomena like reflection and diffraction.3. Electrons and Their interactionsThe third lecture describes Quantum phenomena such as the famous double-slit experiment and Werner Heisenberg's uncertainty principle, thus describing the transmission and reflection of photons. It also introduces his famous "Feynman diagrams" and how quantum electrodynamics describes the interactions of subatomic particles.4. Loose EndsIn the fourth lecture, Feynman discusses the meaning of Quantum electrodynamics and some of its problems. He then describes "the rest of physics", giving a brief look at quantum chromodynamics, the weak interaction and gravity, and how they relate to quantum electrodynamics.
Light waves incident on a material induce small oscillations of polarisation in the individual atoms, causing each atom to radiate a weak secondary wave (in all directions like a dipole antenna). All of these waves add up to specular reflection (following Hero's equi-angular reflection law) and refraction. Light–matter interaction in terms of photons is a topic of quantum electrodynamics, and is described in detail by Richard Feynman in his popular book QED: The Strange Theory of Light and Matter.
As he is leaving the terrace, the dazzling light of the terrace's angel causes Dante to reveal his scientific knowledge, observing that the angle of incidence is equal to the angle of reflection "as theory and experiment will show" (Canto XV).
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