波阵面
Also known as wave surface
In physics, the wavefront of a time-varying wave field is the set (locus) of all points having the same phase. The term is generally meaningful only for fields that, at each point, vary sinusoidally in time with a single temporal frequency (otherwise the phase is not well defined).
Article · 中文
波陣面（英語：wave surface）简称“波面”，為波在介质中傳播时，经相同时间所到达的各点所連成的直线、曲线（二维内）或面（三维内）。也就是说，它指的是某一时刻波动所达到的各点所连成的曲面。最前方的曲面叫做“波前”（英語：wave front）。波阵面质点的振动情况与机械波的初始振动情况相同。由于同一波阵面上各点的振动相位相同，所以波阵面是同相面（即相位差为零）。
Abstract from DBpedia / Wikipedia · CC BY-SA