用普通乘法做相对论速度加法
Using ordinary multiplication to do relativistic velocity addition
摘要：
一维速度的相对论性相加，虽然是入门物理学的中流砥柱，但它对物理学的洞察力远不如它所能提供的。对于这样的计算，我们建议使用速度因子（双向多普勒因子）。速度可以很容易地（通常通过检查）转化为速度因子，反之亦然。速度因子由普通乘法合成。这个简单的装置大大扩展了在入门课程中可以提出和回答的问题。
英文摘要：
Relativistic addition of velocities in one dimension, though a mainstay of introductory physics, contributes much less physical insight than it could. For such calculations, we propose the use of velocity factors (two-way doppler factors). Velocities can easily, often by inspection, be turned into velocity factors, and vice versa. Velocity factors compose by ordinary multiplication. This simple device considerably extends the kinds of questions that can be asked and answered in an introductory course.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
