Depending on how the electron is bound to the atoms of the material, its oscillations may lag behind orlead those of the light wave.
电子的振动究竟是落后或超前原光波,则取决于物质上的原子以什么样的方式束缚它。
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In the sense of long -range history the various civilizations will not take the leadorlag behind for ever, but instead, will vie with each other and be almost on a par. Hence, basically, it i…