Dark Night Sky Paradox Olbers

Dark Night Sky Paradox Olbers It 'been a long time before science was compartmentalized. Professionals could freely mix and overlap. Wilhelm Olbers was a German doctor who was the night sky with his telescope. His work on comets and asteroids very respectable niche in astronomy, he is still a doctor. But something about the sky will bother him. Almost at the end of this career that led to their natural environment. In 1826 he wrote a document and the matter? Why the sky is dark at night? Until then, and even the nineteenth century it was generally believed that the universe is infinite, with infinite stars. Newton argued in their favor, and explains why we have to be. Newton eminence and stature despite Olbers was not convinced. He reasoned that if there are an infinite number of stars, the sky would be with the stars. No matter how far they are the cumulative effect of the stars would light the sky as bright as the sun. But the sky was the first dark.Olbers to the scientific community of this problem and this is known as Olbers's paradox. It appears that if a Swiss astronomer Cheseaux had the same observation over half a century ago and has spoken in his book. Olbers apparently never read that book and came up with the idea themselves. He tried some explanation, but not satisfactory. Finally, he suggested that the light from stars from interstellar gas and rested his case. But then is that this statement will not fit. The interstellar gas is then heated to a brilliant shine and the sky again as bright as the sun. Thus the paradox remained unresolved.A Olbers century after its application was Edwin Hubble discovered the expansion of the universe by the observation of the redshift. The answer to the question is: The sky is not blindingly bright, because the universe is spending its energy growing. The radiation from stars and galaxies is often the redshifts. Whatever is so diluted in the large distance to be considered negligible. The sky remains dark.Redshift is the term for the transition frequency of the light toward the red spectrum due to the distance from the source observer. This is done by a phenomenon known as Doppler effect. The frequency caused by an increase when they are adopted and when he retued. For example, the whistle of an approaching train at a greater height, and if they are lower step where it is gone. In the case of visible light both ends of the spectrum, are colored blue and red. For the stars or galaxies closer to the ground, a spectral blue shift, for which they have retued redshift. All distant galaxies show redshifts directly dependent on their distance, showing that the universe is expanding.Dharmbir Rai Sharma is a retired professor with electrical engineering and physics background. He received his M.S. Diploma in Physics and a PhD in India, in Electrical Engineering from Coell University. He has taught at universities here and also in Brazil, where a day. He maintains a website, in particular as regards the philosophy and science.