by The Aurora Borealis is a spectacular spectacle, but what’s even more fascinating than its vibrant colors is the science that explains them.. Some are a dark yellow color while others have a blue or purplish light. How about neon signs? They have many different colors. Streetlights and neon signs are filled with gas. When they are turned on, an applied voltage energizes electrons in the gas. These electrons strike the gas molecules, which excites them to emit light.
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The majority of auroral displays are predominantly green for two reasons: the first of which is that the human eye detects green more readily than other colours. This is why photographic images of the Northern Lights will often show colours that were not visible at the time to the naked eye. However, the main factor in determining the colours of any given display is the altitude at which the.. The northern and southern lights, auroras visible from the poles, glow with a range of different colored lights. Here’s the reason for each of those colors.
