1933 in science,
other events of 1934,
1935 in science,
list of years in science.
Richard Tolman shows that blackbody radiation in an expanding universe cools but remains thermal.
Georges Lemaître interprets the cosmological constant as due to a vacuum energy with an unusual perfect fluid equation of state.
The Mulliken scale of chemical element electronegativity is developed by Robert S. Mulliken.
Sonoluminescence is discovered at the University of Cologne.
Ernest Lawrence and Stan Livingston invent the cyclotron.
The 135 film cartridge was introduced, making 35mm film easy to use.
Physics: not awarded
Chemistry: Harold Clayton Urey
Physiology or Medicine: George Hoyt Whipple, George Richards Minot, William Parry Murphy
March 9 - Yuri Gagarin, cosmonaut, the first man in space
Carlo Rubbia, physicist, Nobellaurette in Physics
January 29 - Fritz Haber (b. 1868), chemist
July 4 - Marie Curie (b. 1867), physicist.