1901 in science,
other events of 1902,
1903 in science and the
list of years in science.
Lyman Gilmore reportedly becomes the first person to fly a powered airplane (a steam-powered glider).
Spyridon Stais finds the Antikythera mechanism
August Verneuil develops a process for making synthetic rubies.
Arthur Korn devises practical phototelegraphy technology (reduction of photographic images to data bits which can transmitted by wire to other locations)
James Jeans finds the length scale required for gravitational perturbations to grow in a static nearly homogeneous medium
Philipp Lenard observes that maximum photoelectron energies are independent of illuminating intensity but depend on frequency
Theodor Svedberg suggests that fluctuations in molecular bombardment cause the Brownian motion
Nobel Prize for Physics: Hendrik Antoon Lorentz and Pieter Zeeman
Nobel Prize for Chemistry: Hermann Emil Fischer
Nobel Prize for Medicine: Ronald Ross
February 10 - Walter Houser Brattain, physicist
August 8 - Paul Dirac, physicist
September 5 - Rudolf Virchow, pathologist and biologist
December 22 - Richard von Krafft-Ebing, sexologist