Saturday, August 18, 2007

Light That is Lost in Space


If one divides the known nebulae in groups according to the dimensions of their apparent diameters and one also notes their intrinsic brightness, it is clear that their apparent diameters should decrease as the distance increases. Their brightness, on the other hand, will diminish with increasing distance only if interstellar space absorbs light.

As the result of a great number of observations a correlation between brightness and apparent diameter has been observed, and is so marked that it is impossible to put it down to chance or to some systematic error. It appears that there is a real absorption in space, and if more precise descriptions of the nebulae were available the law of absorption could be assigned.

Almost Hopeless Case

Mrs. Flimmins is worried about her new husband. She fears he will never become elegant and refined, because be cannot learn to put on a monocle without twisting his mouth up to one side.

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