Speeds of Wave Propagation in Ideal Gaseous Molecular and Neutrino Media.

The neutrino mass values extracted from the pioneering Nobel Prize winning measurements of Kajita and co-workers at Superkamiokande were used in the classical Newton-Laplace equation for computing the speed of propagation of acoustic waves in gases comprising neutrinos. It is found that, surprisingly, acoustic waves in the lightest neutrino environments proceed with the speed of light in vacuum, . This allows for the computation of in terms of the lightest neutrino mass within 1% and is consistent with the fact that gravitational waves have been recently found to propagate with the speed of light.