5.3 Atoms can be identified by the light they emit When we view the light from glowing atoms, we see that the light consists of a number of discrete frequencies rather than a continuous spectrum This is called elements atomic spectrum(原子 光谱).In1800 s researchers noted the orderliness of elements atomic spectrum, especially hydrogen, but could not give the explanation5.3 Atoms can be identified by the light they emit When we view the light from glowing atoms, we see that the light consists of a number of discrete frequencies rather than a continuous spectrum. This is called element’s atomic spectrum (原子 光谱). In 1800s researchers noted the orderliness of element’s atomic spectrum, especially hydrogen, but could not give the explanation