The Sound Of The Big Bang

Planck_CMB

Temperature variations of the cosmic background radiation as measured by Planck. Red indicates high temperature and blue low temperature.

It seems appropriate to wrap up this project with some research by Prof. John Cramer from the University of Washington, Seattle who recreated the actual sound of the big-bang using data from the Max Planck Institute for Astrophysics in Mathematica software.

About 10 years ago, when the WMAP data on the cosmic microwave background (CMB) became available, I did a Mathematica calculation to produce “the sound of the Big Bang”

…The sound frequencies used in the simulation must be scaled upward by a huge factor (about 10 to the 26 power) to match the response of the human ear, because the actual Big Bang frequencies, which had wavelengths on the order of a fraction of the size of the universe, were far too low to be heard by humans (even had any been around).

http://faculty.washington.edu/jcramer/BBSound_2013.html

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