共查询到18条相似文献,搜索用时 78 毫秒
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根据毕奥-萨伐尔定律求出了同轴等大圆形载流线圈的磁场分布,运用数学软件Maflab绘出了其磁感应线的分布图。 相似文献
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电流磁效应的发现揭示了电与磁的内在联系,拉开了电磁统一的序幕.毕奥—萨伐尔定律的确立,奠定了电磁理论的基础.本文所要介绍的内容是:奥斯特的发现是在什么背景下产生的,毕奥—萨伐尔定律又是怎样得到的. 相似文献
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通过预实验确定智能手机磁传感器的位置后,用其测量亥姆霍兹线圈轴线的磁场分布,验证毕奥-萨伐尔定律及磁场的叠加原理,提供一种较为精确而简便的测量磁场的新方法. 相似文献
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通过思想实验定义电通量密度和磁场强度两个电磁场矢量,认识其物理意义.由高斯定律和安培定律
并借助实验上的库仑定律和毕奥萨伐尔定律,找出电通量密度与电场强度以及磁场强度与磁感应强度之间所必
须满足的关系 相似文献
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利用毕奥萨伐尔定律,通过对EAST内部等离子体电流的运动状态的研究,建立了EAST内部的磁场数学模型,并利用Matlab对实验数据的拟合分析,对模型进行了分析验证。通过误差分析,进而改进模型,研究表明改进后的模型与实验数据能较好吻合,误差较小。相关研究和结论对托卡马克真空室内磁场测量具有一定的指导意义,为进一步研究基于MEMS技术的超导托卡马克装置电磁测量诊断系统的微纳磁敏传感器奠定理论基础。 相似文献
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利用毕奥萨伐尔定律,通过对EAST内部等离子体电流的运动状态的研究,建立了EAST内部的磁场数学模型,并利用Matlab对实验数据的拟合分析,对模型进行了分析验证.通过误差分析,进而改进模型,研究表明改进后的模型与实验数据能较好吻合,误差较小.相关研究和结论对托卡马克真空室内磁场测量具有一定的指导意义,为进一步研究基于MEMS技术的超导托卡马克装置电磁测量诊断系统的微纳磁敏传感器奠定理论基础. 相似文献
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We demonstrate imaging current flow in a transport device by measuring the current-induced Oersted field. A diamond scanning magnetometer that hosts a single nitrogen-vacancy (NV) center at the tip apex is used to obtain the image. We fabricate a U-shape of Pt wire and study evolution of the Oersted field as the current continuously changes its direction along the wire. We find a good agreement between the obtained results and the simulated images based on the Biot-Savart law. In order to show the capability of imaging different field components, we perform the same experiment but with two different axes of the NV center. This work provides a novel imaging method of the current profile and can be applied to various transport experiments. 相似文献
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文章根据毕-沙定律、电流回路元和载流线圈的费曼模型,用普通物理的方法计算出载流线圈在远处一点的磁场分布。 相似文献
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J. P. Wesley 《Foundations of Physics Letters》1994,7(1):95-104
Contrary to Northrup's claim, the pinch effect, predicted by either the Biot-Savart law or the original Ampere law, accounts for less than half the necessary force to drive Hering's pump. The longitudinal Ampere tension, which is not predicted by the Biot-Savart law, is sufficient to account for the remaining force necessary. 相似文献
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W. G. V. Rosser 《Contemporary Physics》2013,54(1):28-44
An historical survey of the theories of the forces between current elements is given and Ampère's formula is compared with the Biot-Savart law. It is shown that the Biot-Savart law, in differential form, is consistent with both Classical Electromagnetism and the Special Theory of Relativity. 相似文献
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R. D. Firouz-Abadi & H. Mohammadkhani 《advances in applied mathematics and mechanics.》2014,6(3):299-306
This paper aims at investigating the resonance frequencies and stability of a long
Graphene Nano-Ribbon (GNR) carrying electric current. The governing equation of
motion is obtained based on the Euler-Bernoulli beam model along with Hamilton's
principle. The transverse force distribution on the GNR due to the interaction of
the electric current with its own magnetic field is determined by the Biot-Savart
and Lorentz force laws.
Using Galerkin's method, the governing equation is solved and the effect of current
strength and dimensions of the GNR on the stability and resonance frequencies are investigated. 相似文献