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Title: How did Hubble use the cosmological redshift to determine distance? Post by: barry on Aug 3, 2013 How did Hubble use the cosmological redshift to determine distance?
Title: Re: How did Hubble use the cosmological redshift to determine distance? Post by: nite_n_day on Aug 6, 2013 The redshift is caused by the doppler effect as a result of the galaxy's velocity. Hubble found that when known galactic distances (determined with a standard candle) were plotted with the recessional velocity, all the data fell on a straight line. The slope of this line is Hubble's constant. This allowed him to use a measured redshift (or calculated velocity) to read the distance off the plot, or to use the equation to calculate the distance.
Title: Re: How did Hubble use the cosmological redshift to determine distance? Post by: barry on Aug 7, 2013 Content hidden
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