Pieter Zeeman (Dutch; 25 May 1865 – 9 October 1943) was a Dutch physicist who shared the 1902 Nobel Prize in Physics with Hendrik Lorentz for his discovery of the Zeeman effect. Wikipedia, Pieter Zeeman
See Also
Chapter 8 - The Oneness of Gravity and Magnetism - II, page 178
Spectra
spectral component
Zeeman effect