1955 in science

Astronomy

• January 8 – Penumbral lunar eclipse.
• June – Fred Hoyle and Martin Schwarzschild describe the mechanism for the creation of red giant stars.
• June 5 – Penumbral lunar eclipse.
• June 20 – Total solar eclipse of 7 min 8 sec duration, the longest between the 11th and 22nd centuries, visible in Southeast Asia. During the entire Second Millennium, only seven such eclipses exceed seven minutes of totality.
• November 29 – Partial lunar eclipse.
• December 14 – Annular solar eclipse.
• Jan Oort confirms that polarized light from the Crab Nebula is produced by synchrotron radiation.

  Biochemistry

• February 26 – Rosalind Franklin publishes her observation that tobacco mosaic virus rods are all of identical length.
• December 22 – Cytogeneticist Joe Hin Tjio working with Albert Levan at Lund University demonstrates that there are forty-six human chromosomes.

  Chemistry

• February 19 – Mendelevium is first synthesized by Albert Ghiorso, Glenn T. Seaborg, Gregory R. Choppin, Bernard G. Harvey, and Stanley G. Thompson at the University of California, Berkeley.
• August 20 – Dorothy Hodgkin and colleagues publish the final structure of vitamin B₁₂.

  Climatology

• August 9 – Gilbert Plass submits his seminal article "The Carbon Dioxide Theory of Climate Change".

  Computer science

• October 2 – The ENIAC computer is deactivated at Aberdeen Proving Ground, Maryland, having been in continuous operation since 1947.
• Former Luftwaffe flying ace Ulrich Steinhilper, a German IBM typewriter salesman, coins and popularizes the term "Textverarbeitung".
• Maurice Wilkes publishes a description of microprogramming.
• RAND publishes A Million Random Digits with 100,000 Normal Deviates.

  Earth sciences

• American geophysicist Clair Cameron Patterson presents his result for the age of the earth using lead isotopic data from the Canyon Diablo meteorite – 4.55 billion years.

  History of science and technology

• October – The term "Industrial archaeology" is popularised.

  Mathematics

• In the classification of finite simple groups, the Brauer–Fowler theorem is published and Claude Chevalley introduces Chevalley groups.
• Gilbert–Shannon–Reeds model for probability distribution of riffle shuffle permutations in shuffling playing cards reported.
• Klaus Roth publishes Roth's theorem on the Diophantine approximation of algebraic numbers.
• The Taniyama–Shimura conjecture is first stated by Yutaka Taniyama at an international symposium in Japan.

  Medicine

• April 12 – The Salk polio vaccine, having passed large-scale trials earlier in the United States, receives full approval by the Food and Drug Administration.
• December 24 – Henry K. Beecher publishes a paper indicating the powerful effect of placebos on patient outcomes.
• Outbreak of "Royal Free disease" or "benign myalgic encephalomyelitis", strongly resembling what will later be known as chronic fatigue syndrome, among staff at the Royal Free Hospital in London.

  Physics

• February – Harold Hopkins and Narinder Singh Kapany publish a key paper in the development of optical fiber technology.
• March – Joseph Rotblat publishes his conclusions that contamination caused by nuclear fallout after the U.S. Castle Bravo hydrogen bomb test at Bikini Atoll is greater than officially stated.
• October – Ultra high frequency AN/FPS-31 early warning radar developed by Lincoln Laboratory begins operation on Jug Handle Hill at West Bath, Maine.
• Existence of the antiproton is experimentally confirmed by University of California, Berkeley, physicists Emilio Segrè and Owen Chamberlain.
• Enrico Fermi, John Pasta, Stanisław Ulam and Mary Tsingou numerically study a nonlinear spring model of heat conduction and discover solitary wave type behavior.
• University of Liverpool cyclotron begins operation.

  Technology

• January 5 – Strömsund Bridge in Sweden completed, the first significant cable-stayed bridge of the modern era.
• August 24 – The first accurate atomic clock, a caesium standard based on a certain transition of the caesium-133 atom, is built by Louis Essen with J. V. L. Parry at the National Physical Laboratory.
• Swiss electrical engineer George de Mestral is granted a patent for the Velcro fabric hook-and-loop fastener.
• American electrical engineer Eugene Polley invents the Zenith Flash-Matic, the first wireless television remote control.

  Zoology

• French zoologist Bernard Heuvelmans publishes On the Track of Unknown Animals, pioneering the pseudoscientific field of cryptozoology.

  Events

• July 9 – Russell–Einstein Manifesto issued in London by Bertrand Russell with the signatures of the late Albert Einstein, Max Born and other prominent scientists drawing the attention of world political leaders to the dangers posed by nuclear weapons.

  Publications

• Eugene Garfield proposes the concept of citation indexing for scientific literature.

  Awards

• Nobel Prizes
• * Physics – Willis Eugene Lamb, Polykarp Kusch
• * Chemistry – Vincent du Vigneaud
• * Medicine – Axel Hugo Theodor Theorell
• Copley Medal – Ronald Fisher
• Wollaston Medal – A. E. Trueman

Births

• January 6 – Susan B. Horwitz, American computer scientist and academic
• January 24 – Alan Sokal, American mathematical physicist and proponent of scientific objectivity.
• February 3 – Sue Ion, born Susan Burrows, English nuclear scientist.
• February 24 – Steve Jobs, American computing entrepreneur.
• April 11 – Piers Sellers, English-born astronaut and climate scientist.
• April 20 – Svante Pääbo, Swedish evolutionary geneticist.
• April 30 – Francis Muguet, French chemist and advocate of open access to information.
• May 30 – Jacqueline McGlade, British-born marine biologist and pioneer of environmental informatics.
• June 8 – Tim Berners-Lee, English-born creator of the world wide web.
• June 11 – Duncan Steel, English/Australasian space scientist.
• October 2 – Nancy Rothwell, English physiologist.
• October 28 – Bill Gates, American software designer and entrepreneur.
• December 22 – Thomas C. Südhof, German-born biochemist, winner of the 2013 Nobel Prize in Physiology or Medicine.
• Huda Zoghbi, Lebanese-born geneticist.

  Deaths

• February 2 – Oswald Avery, Canadian American bacteriologist.
• March 11 – Sir Alexander Fleming, British bacteriologist, winner of the 1945 Nobel Prize in Physiology or Medicine.
• April 10 – Pierre Teilhard de Chardin, SJ, French-born paleontologist and philosopher.
• April 17 – Eduard Pernkopf, Austrian anatomist.
• April 18 – Albert Einstein, German-born winner of the 1921 Nobel Prize in Physics.
• June 12 – Redcliffe N. Salaman, English botanist.
• July 21 – J. B. Christopherson, English physician.
• August 11 – Robert W. Wood, American optical physicist.
• August 12 – James B. Sumner, American winner of the 1946 Nobel Prize in Chemistry.
• November 25 – Sir Arthur Tansley, English botanist and ecologist.
• December 13 – Antonio Egas Moniz, Portuguese neurologist, winner of the 1949 Nobel Prize in Physiology or Medicine.