1965 - James Gunn[?] and Bruce Peterson[?] use observations of the relatively low absorption of the blue component of the Lyman-alpha line[?] from 3C9[?] to strongly constrain the density and ionization state of the intergalactic medium
... German philosopher, was born at Magdeburg.
He read philosophy at Berlin, Halle and Heidelberg, devoting himself mainly to the doctrines of Hegel and Schleiermacher. ...