History of Physics and Astronomy

This version sorts the important events by name. The lifetimes of people are highlighted in blue, important people are in bold blue.

X-Y-Z

X rays discovered – Rφntgen 1895
X ray diffraction – Laue 1912
X rays – Moseley 1913
X ray diffraction – Friedrich and Knipping 1913
X ray tube – Coolidge 1913
X ray wavelength measured using crystal diffraction - Braggs 1912
Xerox photocopier 1959

Yang and Lee – Nobel prize for Physics 1957
Yard – standard version made – John Bird 1760
Yerkes 40" refractor opened 1897
Young 1773- 1829
Young's slits 1801-1803
Yukawa – Nobel prize for Physics 1949

Zeeman effect – Pieter Zeeman 1896
Zeeman – Nobel prize for Physics 1907
Zero point energy 1928
ZETA at Harwell 1957
Zeta particle discovered 1953