The Crane Operator's Trick and other Shenanigans with a Pendulum [0.03%]
吊车操作员的绝招以及其它用 pendulum 搞笑的行为
Stephan Schlamminger,Leon Chao,Vincent Lee et al.
Stephan Schlamminger et al.
The dynamics of a swinging payload suspended from a stationary crane, an unwanted phenomenon on a construction site, can be described as a simple pendulum. However, an experienced crane operator can deliver a swinging payload and have it st...
A gentle introduction to the non-equilibrium physics of trajectories: Theory, algorithms, and biomolecular applications [0.03%]
走向非平衡态的理论、算法及生物分子应用简介
Daniel M Zuckerman,John D Russo
Daniel M Zuckerman
Despite the importance of non-equilibrium statistical mechanics in modern physics and related fields, the topic is often omitted from undergraduate and core-graduate curricula. Key aspects of non-equilibrium physics, however, can be underst...
Averaging of harmonic physical fields over an annular region enclosing field sources [0.03%]
包络场源的环域内谐波物理场均值计算
Lin Li
Lin Li
Fields such as temperature, current density, and static electromagnetic fields in regions with no field sources are harmonic functions that satisfy the Laplace equation. Such functions on a sphere have a well-known mean value property. A ne...
Adriana Gomes Dickman,Ronald Dickman
Adriana Gomes Dickman
We discuss a lattice model of vector-mediated transmission of a disease to illustrate how simulations can be applied in epidemiology. The population consists of two species, human hosts and vectors, which contract the disease from one anoth...
Flying through polytropes [0.03%]
穿越多项式星光分布区域
W Dean Pesnell
W Dean Pesnell
Dropping objects into a tunnel bored through Earth has been used to visualize simple harmonic motion for many years, and even imagined for use as rapid transport systems. Unlike previous studies that assumed a constant density Earth, here w...
Measurement-induced decoherence and information in double-slit interference [0.03%]
测量引起的双缝干涉中的退相干和信息问题
Joshua Kincaid,Kyle McLelland,Michael Zwolak
Joshua Kincaid
The double slit experiment provides a classic example of both interference and the effect of observation in quantum physics. When particles are sent individually through a pair of slits, a wave-like interference pattern develops, but no suc...
An inexpensive programmable illumination microscope with active feedback [0.03%]
一种具有主动反馈功能的可编程照明显微镜，制作成本低廉
Nathan Tompkins,Seth Fraden
Nathan Tompkins
We have developed a programmable illumination system capable of tracking and illuminating numerous objects simultaneously using only low-cost and reused optical components. The active feedback control software allows for a closed-loop syste...
Inexpensive electronics and software for photon statistics and correlation spectroscopy [0.03%]
低成本光电统计及相关光谱学硬件和软件
Benjamin D Gamari,Dianwen Zhang,Richard E Buckman et al.
Benjamin D Gamari et al.
Single-molecule-sensitive microscopy and spectroscopy are transforming biophysics and materials science laboratories. Techniques such as fluorescence correlation spectroscopy (FCS) and single-molecule sensitive fluorescence resonance energy...
Electrical interactions in the cell: Asymmetric screening in a watery antiverse [0.03%]
细胞中的电荷相互作用：水中世界的不对称屏蔽问题
T P Doerr,Yi-Kuo Yu
T P Doerr
The problem of electrostatics in biomolecular systems presents an excellent opportunity for cross-disciplinary science and a context in which fundamental physics is called for to answer complex questions. Due to the large density in biologi...
Peter Leboulluec,Hanli Liu,Baohong Yuan
Peter Leboulluec
Photoacoustic (PA) imaging techniques have recently attracted much attention and can be used for noninvasive imaging of biological tissues. Most PA imaging systems in research laboratories use the time domain method with expensive nanosecon...