中文摘要：

先前的研究已经说明，根据至今在高频率范围内对光速的测量结果，既不能证明真空中光速没有色散，也不能够对光子有质量与否做出判断，因为光子质量引起光速的色散只会集中地发生在频率逼近于零的长波光子辐射的小频率范围之内．所以，为寻找光子质量引起的光速色散，本文关注于静电场的研究．按照波粒二象性，必须放弃“静电场的频率等于零”的观念；静电场应被视为长波光子的辐射场．由光子质量引起的光速色散就发生在静电场的小频率范围内，静电场的传播速度就是频率最低端的光速．计算表明，若光子有质量，则静电场中存在着可观数量的慢光子，它们的速度与极限速度c相比大约低3％到10％．为证明光子质量引起光速的色散，应该测量并分解静电场的传播速度．

英文摘要：

Previous studies show that the determinations for the velocity of light within high frequency region can not prove non-dispersion of the velocity of light in vacuum and also can not decide whether the photon is massive or massless because the dispersion caused by photon mass takes place only within small frequency region of the long- wave photon radiation. Therefore, in order to find the dispersion, the present paper is devoted to study on static field. According to wave-particle duality the idea, which imagines that the frequency of static field is equal to zero, must be given up. The static field should be considered to be the long-wave photon radiation and has a certain fre- quency range, in which the dispersion of the velocity of light caused by photon mass takes place. The propagation velocity of static field is just the velocity of light of the lowest frequency region. Calculations show that there are in static field remarkable slow photons having velocities about 3% to 10% lower than constant c. To prove the disper- sion caused by photon mass, the propagation velocity of static field should be determined and decomposed.