近场超光速电磁场的实验证据
Experimental Evidence of Near-field Superluminally Propagating Electromagnetic Fields
摘要：
给出了一个简单的实验，表明电磁场在振荡电偶极源附近的近场中以超光速传播。一个高频437MHz，2瓦的正弦电信号从一个偶极天线发射到一个平行的近场偶极探测天线。随着天线之间的距离增加，用示波器监测两个天线信号之间的相位差。相位与距离曲线的分析表明，超光速的横向电场波（相位和组）产生约四分之一波长外的源和传播朝向和远离源。在产生时，横波以无限的速度传播。出射的横波在远离光源传播约一个波长后，其速度减小到光速。向内传播的横向场迅速降低到光速，然后在它们进入源时迅速增加到无限大。结果表明，与标准电动力学理论一致。
英文摘要：
A simple experiment is presented which indicates that electromagnetic fields propagate superluminally in the near-field next to an oscillating electric dipole source. A high frequency 437MHz, 2 watt sinusoidal electrical signal is transmitted from a dipole antenna to a parallel near-field dipole detecting antenna. The phase difference between the two antenna signals is monitored with an oscilloscope as the distance between the antennas is increased. Analysis of the phase vs distance curve indicates that superluminal transverse electric field waves (phase and group) are generated approximately one-quarter wavelength outside the source and propagate toward and away from the source. Upon creation, the transverse waves travel with infinite speed. The outgoing transverse waves reduce to the speed of light after they propagate about one wavelength away from the source. The inward propagating transverse fields rapidly reduce to the speed of light and then rapidly increase to infinite speed as they travel into the source. The results are shown to be consistent with standard electrodynamic theory.
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