The Dutch physicist Hendrik Antoon Lorentz (1853-1928) was educated at the University of Leiden, where he later became a Professor of Theoretical Physics. A leading figure in his field, he established the basic mathematical principles that were later used by Albert Einstein for his theory of relativity. Lorentz and his colleague Pieter Zeeman won the Nobel Prize in Physics in 1902 for their researches into the influence of magnetism upon radiation...