he needed for general relativity.
F
RITZ
H
ABER
(1868–1934). German chemist and gas warfare pioneer who helped recruit Einstein to Berlin and mediated between him and Mari
. A Jew who converted to Christianity in an attempt to be a good German, he preached to Einstein the virtues of assimilation, until the Nazis came to power.
C
ONRAD
H
ABICHT
(1876–1958). Mathematician and amateur inventor, member of the “Olympia Academy” discussion trio in Bern, and recipient of two famous 1905 letters from Einstein heralding forthcoming papers.
W
ERNER
H
EISENBERG
(1901–1976). German physicist. A pioneer of quantum mechanics, he formulated the uncertainty principle that Einstein spent years resisting.
D
AVID
H
ILBERT
(1862–1943). German mathematician who in 1915 raced Einstein to discover the mathematical equations for general relativity.
B
ANESH
H
OFFMANN
(1906–1986). Mathematician and physicist who collaborated with Einstein in Princeton and later wrote a book about him.
P
HILIPP
L
ENARD
(1862–1947). Hungarian-German physicist whose experimental observations on the photoelectric effect were explained by Einstein in his 1905 light quanta paper. Became an anti-Semite, Nazi, and Einstein hater.
H
ENDRIK
A
NTOON
L
ORENTZ
(1853–1928). Genial and wise Dutch physicist whose theories paved the way for special relativity. Became a father figure to Einstein.
M
ILEVA
M
ARI
(1875–1948). Serbian physics student at Zurich Polytechnic who became Einstein’s first wife. Mother of Hans Albert, Eduard, and Lieserl. Passionate and driven, but also brooding and increasingly gloomy, she triumphed over many, but not all, of the obstacles that then faced an aspiring female physicist. Separated from Einstein in 1914, divorced in 1919.
R
OBERT
A
NDREWS
M
ILLIKAN
