1981 in science

1981 in science
Year	1981

1981 in science was a year marked by significant milestones in space exploration, the dawn of a new era in personal computing, and groundbreaking discoveries across multiple scientific disciplines. The launch of the first Space Shuttle mission heralded a reusable approach to spaceflight, while the introduction of the IBM Personal Computer set a standard that would dominate the industry. In the life sciences, the first cases of a new immune disorder were reported, which would later be known as AIDS.

Astronomy and space exploration

The year was dominated by the maiden flight of NASA's Space Shuttle program, with STS-1, the Space Shuttle Columbia, launching on April 12 with astronauts John W. Young and Robert L. Crippen. This mission demonstrated the viability of a reusable orbiter for the first time. In planetary science, the Voyager 2 spacecraft conducted its historic flyby of Saturn, returning invaluable data on the planet's rings and moons, including Titan. The Solar Maximum Mission satellite, launched in 1980, continued to observe solar flare activity, providing critical data during a period of high solar activity. Astronomers also made progress in understanding gamma-ray bursts and the structure of distant galaxies.

Computer science and technology

A pivotal moment occurred on August 12 with the announcement of the IBM Personal Computer, which quickly established the PC architecture as the dominant standard in the burgeoning personal computer market. This machine utilized an Intel 8088 microprocessor and an operating system from a small company called Microsoft, specifically PC DOS. In other developments, Hayes Microcomputer Products introduced the Smartmodem 1200, which became a standard for dial-up Internet access. The concept of a graphical user interface advanced with the release of the Xerox Star workstation, though its high cost limited its immediate impact. The ARPANET, a precursor to the modern Internet, continued to expand its network of connected research institutions.

Earth sciences

Research in the earth sciences was heavily influenced by the growing acceptance of plate tectonics theory. Scientists published detailed studies on subduction zones, particularly around the Pacific Ring of Fire, and the formation of ophiolite complexes. Volcanologists closely monitored increased activity at Mount St. Helens, which had erupted catastrophically the previous year. In climatology, researchers began publishing more concrete data linking atmospheric carbon dioxide increases, measured at observatories like Mauna Loa Observatory, to potential global warming. The field of oceanography saw advances in understanding deep-sea hydrothermal vent ecosystems and mid-ocean ridge processes.

Life sciences

The year saw the first official published reports from the U.S. Centers for Disease Control and Prevention describing a rare pneumonia caused by Pneumocystis carinii in previously healthy homosexual men in Los Angeles, marking the beginning of the AIDS epidemic. In a landmark achievement, scientists at the University of California, San Francisco and Genentech successfully produced the first recombinant human growth hormone. Paleontologists made headlines with the discovery of the remarkably preserved remains of a dinosaur hatchling, dubbed "Baby Louie," which provided new insights into dinosaur development. The first transgenic animal, a mouse carrying genes from a virus, was also created this year.

Physics

In particle physics, researchers at the Stanford Linear Accelerator Center and Lawrence Berkeley National Laboratory continued to gather evidence for the existence of the top quark, though its confirmation would come later. Theoretical work progressed on grand unified theories and the properties of neutrinos. The field of condensed matter physics was advanced by the study of the quantum Hall effect, discovered the previous year, with further precision measurements confirming its quantized nature. Developments in laser technology included refinements to excimer laser systems, which would later become crucial for applications like LASIK eye surgery.

Awards

* Nobel Prize in Physics: Nicolaas Bloembergen and Arthur Leonard Schawlow "for their contribution to the development of laser spectroscopy"; and Kai Siegbahn "for his contribution to the development of high-resolution electron spectroscopy". * Nobel Prize in Chemistry: Kenichi Fukui and Roald Hoffmann "for their theories, developed independently, concerning the course of chemical reactions". * Nobel Prize in Physiology or Medicine: Roger W. Sperry "for his discoveries concerning the functional specialization of the cerebral hemispheres"; and David H. Hubel and Torsten N. Wiesel "for their discoveries concerning information processing in the visual system". * Turing Award: Edgar F. Codd for his fundamental and continuing contributions to the theory and practice of database management systems, particularly the relational model. * Fields Medal in Mathematics: Awarded to Alain Connes, William Thurston, and Shing-Tung Yau.

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