See also: 1899 in science, other events of 1900, 1901 in science and the list of years in science.
Aeronautics The first successful airship built by Ferdinand von Zeppelin Chemistry Johannes Rydberg refines the expression for observed hydrogen line wavelengths Mathematics David Hilbert states his list of 23 problems which show where some further mathematical work is needed, Photography Kodak introduced their first Brownie. Physics gamma-rays discovered by Paul Villard while studying uranium decay Max Planck states his quantum hypothesis and blackbody radiation law Births March 9 - Howard Aiken, computing pioneer March 19 - Frédéric Joliot, physicist April 25 - Wolfgang Ernst Pauli, physicist April 26 - Charles Richter, geophysicist and inventor August 25 - Sir Hans Adolf Krebs, medical doctor and biochemist Deaths March 6 - Gottlieb Daimler, engineer, automotive pioneer (* 1834)
