| Popis: |
In general, the term “light pollution” or “light smog” refers to the excessive brightening of the night sky by artificial light (see Dark Sky). Street luminaires, billboards, shop windows and similar lighting installations that are switched on overnight produce light that reaches the atmosphere directly or indirectly (through surface reflections). On the way there, various molecular components of the air are made visible by reflections. The night sky is artificially brightened (Fig. 2.1, 2015). |
