Attraction To Light
Moths frequently appear to circle artificial lights, although the reason for this behavior remains unknown. One hypothesis advanced to explain this behavior is that moths use a technique of celestial navigation called transverse orientation. By maintaining a constant angular relationship to a bright celestial light, such as the Moon, they can fly in a straight line. Celestial objects are so far away, that even after travelling great distances, the change in angle between the moth and the light source is negligible; further, the moon will always be in the upper part of the visual field or on the horizon. When a moth encounters a much closer artificial light and uses it for navigation, the angle changes noticeably after only a short distance, in addition to being often below the horizon. The moth instinctively attempts to correct by turning toward the light, causing airborne moths to come plummeting downwards, and resulting in a spiral flight path that gets closer and closer to the light source.
Read more about this topic: Moth
Famous quotes containing the words attraction to, attraction and/or light:
“The satirist is prevented by repulsion from gaining a better knowledge of the world he is attracted to, yet he is forced by attraction to concern himself with the world that repels him.”
—Italo Calvino (1923–1985)
“The struggle of literature is in fact a struggle to escape from the confines of language; it stretches out from the utmost limits of what can be said; what stirs literature is the call and attraction of what is not in the dictionary.”
—Italo Calvino (1923–1985)
“To the highest leadership among women it is given to hold steadily in one hand the sacred vessels that hold the ancient sanctities of life, and in the other a flaming torch to light the way for oncoming generations.”
—Anna Garlin Spencer (1851–1931)