A blind (but hearing) cosmologist observed the radiation-dominated universe. He detected faint tones and noted that their
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A blind (but hearing) cosmologist observed the radiation-dominated universe. He detected faint tones and noted that their frequencies declined as t−1/2 and believed (correctly) that the sound speed is constant. As he was blind, he knew nothing of photons but did understand classical scalar field theory. What did he conclude about V(φ)?
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The blind cosmologist despite being unable to directly observe photons was able to detect faint tones and infer valuable information about the radiationdominated universe using his understanding of cl...View the full answer
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Related Book For 
Modern Classical Physics Optics Fluids Plasmas Elasticity Relativity And Statistical Physics
ISBN: 9780691159027
1st Edition
Authors: Kip S. Thorne, Roger D. Blandford
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