陀螺仪特斯拉计的相关讨论  

DISCUSSION ON GYROSCOPE TESLA METER

作　　者：姚尧 李文华 王晓杰[1,2] 王槿 潘崇佩[1,2] 文小青[1,2] YAO Yao;LI Wenhua;WANG Xiaojie;WANG Jin;PAN Chongpei;WEN Xiaoqing(School of Physics,Nankai University,Tianjin 300071,Nankai University,Tianjin 300071;National Demonstration Center for Experimental Physics Education,Nankai University,Tianjin 300071)

机构地区：[1]南开大学物理科学学院,天津300071 [2]南开大学基础物理国家级实验教学示范中心,天津300071

出　　处：《物理与工程》2021年第2期87-92,共6页Physics and Engineering

基　　金：南开大学2019年实验教学课程改革项目(2019NKSYJG10);南开大学本科教育教学改革项目(NKJG2020023);南开大学自制仪器项目(20NKZZYQ13)。

摘　　要：当一个由非铁磁性导体制成的陀螺仪,被放置在磁场中时,其由于旋转切割磁感线会受到制动力矩的作用,从而会发生减速。本文首先将此模型简化为非铁磁性导体圆盘在磁场中的运动,通过求解体系所满足的麦克斯韦方程组,结合实验现象进行了解释;再总结出导体圆盘的角速度变化与外界磁场大小的关系,并将其用于制作一个陀螺仪特斯拉计,对其测量结果进行了讨论与分析。When a gyroscope made of a non-ferromagnetic conductor is placed in a magnetic field,it will decelerate by the braking torque because its rotation cuts the magnetic induction wire.This model is simplified to the motion of a non-ferromagnetic conductive disc in a magnetic field.By solving the Maxwell equations of this system,the experimental phenomena are explained.Finally,the relationship between the angular velocity change of the conductive disc and the external magnetic field is summarized,and it is used to make a gyroscope Tesla meter.The measurement results are briefly discussed and analyzed.

关 键 词：IYPT 电磁制动 安培力 楞次定律 涡旋电流 

分 类 号：O441[理学—电磁学] TH824.3[理学—物理]