The Green Ray: Extraordinary Voyages #23 - Tapa blanda

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The heroes are trying to observe the green ray in Scotland. After numerous unsuccessful tries caused by clouds, flocks of birds or distant boat sails hiding the sun, the phenomenon is eventually visible, but the heroes, finding love in each other's eyes, don't pay attention to the horizon.Scientific basis[edit]Green flashes and green rays are rare optical phenomena that occur shortly after sunset or before sunrise, when a green spot is visible for a short period of time above the sun, or a green ray shoots up from the sunset point. It is usually observed from a low altitude where there is an unobstructed view of the horizon, such as on the ocean. The idea in the novel that one can predict where and when to observe the green ray has no scientific basis. However, they are regularly sighted by airplane pilots because they often can see the true horizon in mid flight, more often when flying west because the sun's relative motion is slightly slower.