美国物理教师协会
期刊
会议
图书
作者:Rafael M. Digilov
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.510-514AAPT
摘要:Based on the generalized Poiseuille equation modified by a kinetic energy correction, an explicit solution for the time evolution of a liquid column draining under gravity through an exit capillary tube is derived in terms of the Lambert W function. In contrast to the conventiona...
作者:Jeffrey R. Kensrud
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.503-509AAPT
摘要:Experiments are done by colliding a swinging bat with a stationary baseball or softball. Each collision was recorded with high-speed cameras from which the post-impact speed, launch angle, and spin of the ball could be determined. Initial bat speeds were in the range 63–88 m...
作者:J. Wang , Y. Hao
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.542-549AAPT
摘要:We discuss a meshfree method for solving boundary value problems in physics. The method uses random data interpolation and radial basis functions that depend on the distance, instead of the usual basis functions that depend on the position. As an example, we apply this method to ...
作者:Jay M. Pasachoff
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.485-494AAPT
摘要:This Resource Letter provides a guide to the available literature, listing selectedbooks, articles, and online resources about scientific, cultural, and practical issuesrelated to observing solar eclipses. It is timely, given that a total solar eclipse will cross thecontinental U...
作者:Rozane de F. Turchiello
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.522-528AAPT
摘要:This paper presents a simple and affordable experiment on the thermal lens effect, suitable for an undergraduate educational laboratory or as a tabletop demonstration in a lecture on nonlinear optics. Such an experiment exploits the formation of a lens in an absorbing medium illu...
作者:Arsène Chemin , Pauline Besserve , Aude Caussarieu ...
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.495-502AAPT
摘要:The magnetic cannon is a simple device that converts magnetic energy into kinetic energy. When a steel ball with low initial velocity impacts a chain consisting of a magnet followed by addition steel balls, the last ball in the chain gets ejected at a much larger velocity. The an...
作者:Shaun E. Beach , Thomas M. Semkow
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.515-521AAPT
摘要:We have developed accessible methods to demonstrate fundamental statistics in several phenomena, in the context of teaching electronic signal processing in a physics-based college-level curriculum. A relationship between the exponential time-interval distribution and Poisson coun...
作者:Kamil Serafin
来源:[J].American Journal of Physics(IF 0.782), 2017, Vol.85 (7), pp.529-541AAPT
摘要:An instructive paradox concerning the classical description of energy and momentum of extended physical systems in special relativity theory is explained using an elementary example of two point-like massive bodies rotating on a circle in their center-of-mass frame of reference, ...

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