Bulletin of the American Physical Society
2008 Joint Fall Meeting of the New England Sections of APS and AAPT
Volume 53, Number 9
Friday–Saturday, October 10–11, 2008; Boston, Massachusetts
Session D1: Poster Session (5:00-6:00 pm) |
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Room: Campus Center, Third Floor Ballroom |
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D1.00001: Freely Available ``Real-world'' Problems for Introductory Mechanics Andrew Pawl, David Pritchard, Analia Barrantes The RELATE group at MIT (http://relate.mit.edu) has begun developing a series of introductory mechanics problems using real-world data. Our focus is on problems that range from moderate (homework-level) problems through difficult problems suitable for in-class discussion and group work. The problems are required to fit within a standard college or advanced high school curriculum rather than hijacking it. The sources of the data are presented within the problem and photographs are provided where possible. In this poster, we present a preliminary set of these real-world problems which has been made freely available on our website. [Preview Abstract] |
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D1.00002: On the Doppler-Like Anisotropy of the Space-Time of General Relativity. Dmitri Rabounski, Larissa Borissova We consider a light signal (photon) originating on the Earth, whose reference space is non-holonomic (where the time lines are non-orthogonal to the spatial section due to the Earth's rotation) and is moving toward a direction in the cosmos relative to a net fixed upon the resting stars. Two cases are under study: a photon radiated toward the motion, and orthogonal to it. To find the deviation of the photon from the initial direction, we consider the equations of isotropic geodesics (the equations of motion of a light-like particle). To simplify the calculation, we consider a satellite-bound observer (in a weightless state), where the force of gravity is put into equilibrium by the space rotation. The geodesic equations indicate the deviation of both radial and tangential photon from its initial direction due to the space rotation and the toward motion contained in the space metric. As a result the field of distribution of the photons attains a first-order anisotropy v/c along the motion of the space while the velocity of light remains constant (we call it the ``Doppler-like anisotropy''). In a resting or holonomic (non-rotating) space the anisotropy effect vanishes. [Preview Abstract] |
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D1.00003: The Last element in a New Periodic Table Albert Khazan Among scientists there is no common opinion about possible number of the elements in the Periodic Table. The existing points of view lay within the limits from 120 up to 218 and more. However if to arrange the number of isotopes depending on the charge of a nuclei of atoms the broken curve in the form of the average parabola will turn out, in descending which branch the number of the isotopes sharply decreases, reaching units at all up to the end of the 7th period. After achievement of the maximum in the 6th period, the number of the isotopes sharply decreases. Hardly it is necessary to tell about prospective new 100 elements when are unsolved all of the problem up to N 119. As a result of the establishment of the top border of the Periodic Table there is a question about the location of the last element. From the views on the symmetry, it should be close to the 1st group. On the electronic configuration calculated for 218 elements, its place in the 5th group: 2, 8, 18, 32, 50, 32, 11, 2. Considering that fact, that in the 8th period has not 50 elements, we offer a following version to discuss: 2, 8, 18, 32, 36, 32, 18, 8, 1. (Progr. Phys., 2007, v.1, 38; v.2, 83; v.2, 104; 2008, v.3, 56). [Preview Abstract] |
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D1.00004: Time, Light Speed and Space Energy Penglin Yang This paper presents a formula that describe the relation with time and the space energy which resolves the key of Lorentz transformation how the time changes in different frames of reference. As the result, it is natural that the light speed is not constant. However, from the formula, in the same space--same space energy, the light speeds in different frames of reference are same. From this, it is easy to explain some facts, for example, light defraction; black holes attract light (it is not attracting, it is defraction); light curving nearby the sun; the temperature of sun surface is higher than inside, etc.) [Preview Abstract] |
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D1.00005: A Note of Extended Proca Equations and Superconductivity V. Christianto, Florentin Smarandache, F. Lichtenberg It has been known for quite long time that the electrodynamics of Maxwell equations can be extended and generalized further into Proca equations. The implications of introducing Proca equations include an alternative description of superconductivity, via extending London equations. In the light of another paper suggesting that Maxwell equations can be written using quaternion numbers, then we discuss a plausible extension of Proca equation using biquaternion number. Further implications and experiments are recommended. [Preview Abstract] |
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