Hedgehogs at Dawn

rambling ratz

Dawn this morning was a rather bright pink affair. We usually perceive the sky as blue because when sunlight hits small molecules such as oxygen and nitrogen, the shortest wavelengths of light, the blues and purples get scattered. At sunrise and sunset the sun is at a different angle and the light takes a longer path through the atmosphere meaning that much of the blue wavelengths have been scattered before we see them, leaving us with the red wavelengths. Animals that can see different parts of the spectrum to us, such as ultraviolet, will see the sky very differently to us.Photo of sunrise

As for the saying « Red sky in the morning, shepherd’s (sailor’s) warning. »; in the UK, generally speaking, weather systems come in from the west. A red sunrise indicates that high pressure has already moved east to be followed by a low pressure wet and windy system moving in behind…

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