Siegfried Adolf Wouthuysen (17 August 1916 – 14 July 1996) was a Dutch physicist who made contributions to quantum mechanics. Wouthuysen was born in Amsterdam...

The Foldy–Wouthuysen transformation was historically significant and was formulated by Leslie Lawrance Foldy and Siegfried Adolf Wouthuysen in 1949 to...

and the beginning of the epoch of reionization. It is named for Siegfried Adolf Wouthuysen and George B. Field. The period after recombination occurred and...

of physics. In 1949 at the University of Rochester, Foldy and Siegfried Adolf Wouthuysen, working with Robert Marshak, wrote a preprint on the nonrelativistic...