| Continuous and Discrete Light Sources |
Two kinds of light sources are in common use, the incandescent bulb and the fluorescent light, the latter a modified mercury discharge lamp. |
| Hydrogen |
The atomic emission spectrum of hydrogen is shown. |
| Helium |
The atomic emission spectrum of helium is shown. |
| Neon |
The atomic emission spectrum of neon is shown. |
| Mercury |
The atomic emission spectrum of mercury is shown. |
The atomic emission spectra of hydrogen, helium, neon, and mercury are shown.
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