答:光是横电磁波,是一种在各个方向上振动的射线。其电场矢量E与磁场矢量H相互垂直,且与光波传播方向垂直。由于产生感光作用的主要是电场矢量,一般就将电场矢量作为光波的振动矢量。光波电场矢量与传播方向所组成的平面称为光波的振动面。若此振动面不随时间变化,这束光就称为 A: Light is transverse electromagnetic waves, is a ray of vibration in all directions. The electric field vector E and the magnetic field vector H are perpendicular to each other and perpendicular to the light wave propagation direction. As the main role of the photosensitive effect of the electric field vector, the electric field vector is generally used as the light wave vibration vector. The plane of light wave electric field vector and direction of propagation is called the vibration surface of light wave. If the vibration surface does not change over time, this light is called