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Updated: May 9, 2025
The object of his enquiry was Wisdom, and he reproached his vain-glorious countrymen of the city of Diana with the words: "Your knowledge of many things does not give you wisdom." In his philosophy of nature he declared the One Thing to be Fire, but Fire of a mystical nature, "self-kindled and self-extinguished," the vital quickening power of the universe.
It must at once occur to you that, inasmuch as we have in interference an agency by which light may be self-extinguished, we may have in it the conditions for the production of colour. But this would imply that certain constituents are quenched by interference, while others are permitted to remain. This is the fact; and it is entirely due to the difference in the lengths of the waves of light.
By interference in the earth's atmosphere, the light of a star, as shown by Arago, is self-extinguished, the twinkling of the star and the changes of colour which it undergoes being due to this cause.
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