美国物理教师协会
期刊
会议
图书
作者:Michael E. Crenshaw
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.296-300AAPT
摘要:The theory of dielectric special relativity was derived by Laue from a fundamental physical basis in Einstein's special relativity and the relativistic velocity sum rule. The Laue theory is experimentally verified by the Fizeau water tube experiment. In contrast, the Rosen versio...
作者:Alfred C.K. Farris
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.310-316AAPT
摘要:We describe a minimalistic model of a protein undergoing folding into its native (ground)state. This HP protein model is composed of a lattice polymer with two types of monomers:hydrophobic (H) and polar (P). The specific sequence of the two types of monomers is oftenchosen to mi...
作者:J. M. Pearson
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.264-269AAPT
摘要:A very slight change in some nuclear properties would have been enough to make the fission chain reaction impossible. If the alpha-decay energy of 235U, the only naturally occurring fissile nuclide, were just 0.1 MeV higher than it actually is so little would remain in...
作者:Ronald P. Gruber
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.301-304AAPT
摘要:The past, present, and future are not fundamental properties of Minkowski spacetime. It has been suggested that they are properties of a class of information gathering and utilizing systems (IGUSs). A human is a model IGUS robot. We provide a demonstration that what is perce...
作者:Nicholas A. Mecholsky
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.245-254AAPT
摘要:The motion of a handle spinning in space has an odd behavior. It seems to unexpectedlyflip back and forth in a periodic manner as seen in a popular YouTube video (“Plasma Ben,Dancing T-handle in zero-g, HD,” < https://www.youtube.com/watch?v=1n-HMSCDYtM >). As an asymmetrica...
作者:Tejas Dethe , Harmeet Gill , Dylan Green ...
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.279-290AAPT
摘要:Our basic observations from daily experiences as well as sophisticated experiments suggest causality in various branches of physics (and beyond). Causality is mathematically reflected in the analyticity of the system's response function, which relates the dispersion of the system...
作者:Thorsten Pöschel , Daniel S. Nasato
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.255-263AAPT
摘要:An impressive ping-pong ball cannon can be made by placing a bottle of liquid nitrogen at the bottom of a container and quickly covering it with, say, 1500 ping-pong balls. The liquid turns rapidly into a gas whose mounting pressure explodes the bottle, sending a swarm of balls u...
作者:Alberto T. Pérez , Pablo García-Sánchez , Miguel A. S. Quintanilla ...
来源:[J].American Journal of Physics(IF 0.782), 2019, Vol.87 (4), pp.270-274AAPT
摘要:During July 2018, a group of top high school Spanish students attended a summer scientific camp at the University of Seville. The topic of the project was magnetic levitation. During the one-week-long stay, the students investigated several possible ways of achieving stable ...

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