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We describe the use of optically levitated microspheres as test masses in experiments aimed at reaching and potentially exceeding the standard quantum limit for position measurements. Optically levitated microspheres have low mass and are…

Quantum Physics · Physics 2015-06-26 Kenneth G. Libbrecht , Eric D Black

Recent years have seen an explosion of interest in analyzing the motion of objects in video data as a way for students to connect the concepts of physics to something tangible like a video recording of an experiment. A variety of software…

In the present work we have made use of the animation freeware Algodoo,as an easy handling tool to teach and learn physics. The animation is based on the oblique motion model and we have described the movement qualitatively, showing changes…

Motion models play a great role in visual tracking applications for predicting the possible locations of objects in the next frame. Unlike target tracking in radar or aerospace domain which considers only points, object tracking in computer…

Computer Vision and Pattern Recognition · Computer Science 2020-10-22 Nathanael L. Baisa

Machine learning (ML) is transforming modern physics research, but practical, hands-on experience with ML techniques remains limited due to cost and complexity barriers. To address this gap, we introduce an affordable, autonomous,…

Physics Education · Physics 2026-04-16 Yang Liu , Qianjie Lei , Xiaolong He , Yizhe Xue , Kexin He , Haitao Yang , Yong Wang , Xian Zhang , Li Yang , Yichun Zhou , Ruiqi Hu , Yong Xie

Visual tracking is fragile in some difficult scenarios, for instance, appearance ambiguity and variation, occlusion can easily degrade most of visual trackers to some extent. In this paper, visual tracking is empowered with wireless…

Computer Vision and Pattern Recognition · Computer Science 2019-03-12 Panwen Hu , Zizheng Yan , Rui Huang , Feng Yin

Vision-aided wireless communication is motivated by the recent advances in deep learning and computer vision as well as the increasing dependence on line-of-sight links in millimeter wave (mmWave) and terahertz systems. By leveraging…

Signal Processing · Electrical Eng. & Systems 2020-02-14 Muhammad Alrabeiah , Jayden Booth , Andrew Hredzak , Ahmed Alkhateeb

This paper proposes an ultra-wideband (UWB) aided localization and mapping system that leverages on inertial sensor and depth camera. Inspired by the fact that visual odometry (VO) system, regardless of its accuracy in the short term, still…

Robotics · Computer Science 2018-02-27 Chen Wang , Handuo Zhang , Thien-Minh Nguyen , Lihua Xie

The lack of realistic and open benchmarking datasets for pedestrian visual-inertial odometry has made it hard to pinpoint differences in published methods. Existing datasets either lack a full six degree-of-freedom ground-truth or are…

Computer Vision and Pattern Recognition · Computer Science 2018-07-27 Santiago Cortés , Arno Solin , Esa Rahtu , Juho Kannala

WiFi human sensing has become increasingly attractive in enabling emerging human-computer interaction applications. The corresponding technique has gradually evolved from the classification of multiple activity types to more fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2021-10-19 Yili Ren , Jie Yang

We have designed, built and operated a physical pendulum which allows one to demonstrate experimentally the behaviour of the pendulum under any equation of motion for such a device for any initial conditions. All parameters in the equation…

Popular Physics · Physics 2015-05-13 H. Hauptfleisch , T. Gasenzer , K. Meier , O. Nachtmann , J. Schemmel

Flexible endoscope motion tracking and analysis in mechanical simulators have proven useful for endoscopy training. Common motion tracking methods based on electromagnetic tracker are however limited by their high cost and material…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yuelin Zhang , Kim Yan , Chun Ping Lam , Chengyu Fang , Wenxuan Xie , Yufu Qiu , Raymond Shing-Yan Tang , Shing Shin Cheng

While deep learning has been very successful in computer vision, real world operating conditions such as lighting variation, background clutter, or occlusion hinder its accuracy across several tasks. Prior work has shown that hybrid models…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Kawisorn Kamtue , Jose M. F. Moura , Orathai Sangpetch , Paulo Garcia

A particle tracking velocimetry apparatus is presented that is capable of measuring three-dimensional particle trajectories across large volumes, of the order of several meters, during natural snowfall events. Field experiments, aimed at…

Fluid Dynamics · Physics 2023-04-12 Nathaniel Bristow , Jiaqi Li , Peter Hartford , Michele Guala , Jiarong Hong

Based on elastic collisions, the linear momentum of a fast neutron can be measured from as few as two consecutive recoil ion tracks plus the vertex position of the third collision, or `two and half' ion tracks. If the time delay between the…

Instrumentation and Detectors · Physics 2023-08-22 Zhehui Wang , Christopher L. Morris

We report a simple demonstration of radiation pressure on a table-top experiment. Utilizing dynamic force microscopy in ambient environment, the resonant motion of a cm-sized cantilever driven by an amplitude-modulated diode laser is…

Physics Education · Physics 2016-06-08 G. Jesensky , D. Dams , O. Khomenko , W. J. Kim

By the recent spread of machine learning in the robotics field, a humanoid that can act, perceive, and learn in the real world through contact with the environment needs to be developed. In this study, as one of the choices, we propose a…

Locomotion on dynamic rigid surface (i.e., rigid surface accelerating in an inertial frame) presents complex challenges for controller design, which are essential for deploying humanoid robots in dynamic real-world environments such as…

Robotics · Computer Science 2024-09-16 Yuan Gao , Victor Paredes , Yukai Gong , Zijian He , Ayonga Hereid , Yan Gu

The paper describes a method for measuring the thermal diffusivity of materials having a high thermal conductivity. The apparatus is rather simple and low-cost, being therefore suitable in a laboratory for undergraduate students of…

Physics Education · Physics 2014-01-15 Amelia Carolina Sparavigna

In this paper, we demonstrate a low-cost method to measure the speed of light. It uses instruments which are readily available in any undergraduate laboratory in a developing country and some components which are inexpensive. The method is…

Physics Education · Physics 2021-08-17 Faraz Mehdi , Kiran M. Kolwankar