We present an elegant derivation of the Doppler factor in the Linard–Wiechert potentials of an extended particle, based on a theorem authored by Synge and dealing with cross-sections through worldtubes.

中文翻译：

---

Linard-Wiechert 电位中多普勒因子的推导

我们基于 Synge 撰写的定理并通过世界管处理横截面，提出了扩展粒子的 Linard-Wiechert 势中多普勒因子的优雅推导。