Show eye Is easily tricked by natures Na illusions looking at the brilliant plumage of the humming bird or the magnificent tall of a peacock you yon way may exclaim at the wonderful colors you yon see but actually your eye Is being tricked by one of natures illusions this magical effect of color Is produced by a very thin transparent film on oil the feathers the light that strikes the upper surface Is partly reflected to the eye while the rest passes through and Is reflected from the under surface of the film in this way the waves of right light that come from the under surface being delayed by that extra journey fall somewhat out of step with the waves that were reflected from the upper surface this delay causes tle the blotting out of light waves of some particular color just as one series of waves 0 on a a po pond n d may be blotted out by another and in consequence the reflected white light being robbed of part of its color will shine with the color that is left to contemplate the same effect look upon the play of color in a pearl w whose hose beauty Is all due to the fact that it Is built up in flue fine layers of transparent film pearsons weekly |