Geoffrey William Arnold Dummer

The first person to conceptualize and build a prototype of the integrated circuit, commonly called the microchip, Dummer made this pioneering contribution in the late 1940s and early 1950s. He passed the...

Elisha Gray

Best known for his development of a telephone prototype in 1876, Gray is considered by some writers to be the true inventor of the variable resistance telephone, despite losing out to Alexander...

Henryk Zygalski

Designer of the "perforated sheets," also known as "Zygalski sheets," a manual device for finding Enigma settings, Zygalski was a Polish mathematician and cryptologist who worked at breaking German Enigma ciphers before...

Georg (Per) Pehr Scheutz

Co-developer of the Scheutzian calculation engine, which produced the first tables calculated and printed by machinery, Scheutz was a 19th-century Swedish lawyer, translator, and inventor. He studied law at Lund University, graduating...

Arnold A. Cohen

Developer of selectively alterable digital storage on magnetic drums, Cohen held a patent that proved basic to the field. Born in Duluth, MN, he was a renowned physicist noted for his significant...

William Oughtred

Credited as the inventor of the slide rule in 1622, Oughtred was the first to use two logarithmic scales sliding by one another to perform direct multiplication and division. Oughtred also introduced the...

Henry (Hank) Wallman

Co-builder of the Electronic Differential Analyser, an early example of an analog computer, Wallman also performed pioneering research in biomedical engineering combining video displays with X-ray imaging. An American mathematician known for...

Marshall Nicholas Rosenbluth

Deriver of the Metropolis algorithm — cited in Computing in Science and Engineering (Jan. 2000) as being among the top 10 algorithms having the "greatest influence on the development and practice of...

Betty Jean Bartik (née Jennings)

One of the original six programmers of the ENIAC computer, Betty Jean Jennings (later known as Jean Bartik) helped lay the groundwork for modern computing during a pioneering era in the field....

Samuel Morland

Credited with early developments in relation to computing, hydraulics and steam power, Morland was a notable English academic, diplomat, spy, inventor and mathematician of the 17th century. He was educated at Winchester...

Galileo Galilei

Called "the Father of Modern Science," Galilei played a major role in the Scientific Revolution, including landmark improvements to the telescope and the invention of an improved military compass. He was born...

Clifford Ambrose Truesdell III

Developer of the mathematical underpinnings of continuum mechanics, Truesdell transformed the study of elasticity, fluid dynamics, and related fields through work that began in the 1960s and continued for the rest of...

Allessandro Volta

Inventor of the battery in 1800 and a remotely operated pistol that was a significant forerunner of the telegraph, Volta transformed the understanding of electricity. He was born in Como, Italy, and taught...

Leopold Kronecker

A contributor to the concept of continuity and the reconstruction of irrational numbers in real numbers, Kronecker was a German mathematician who worked on number theory and algebra. He was born in...

Guglielmo Marconi

Known as the father of long distance radio transmission, Marconi was an Italian inventor celebrated for his development of Marconi's law and a radio telegraph system. Although he is often accredited as...

Léon Bollée

Inventor of the first calculating machine, Bollée began work in 1887 on three calculating machines: the Direct Multiplier, the Calculating Board, and the Arithmographe. Bollée's Multiplier was the second successful direct-multiplying calculator...

Solomon Lefschetz

Developer of the Lefschetz fixed point theorem, now a basic result of topology, Lefschetz did fundamental work on algebraic topology, its applications to algebraic geometry, and the theory of non-linear ordinary differential...

Rudolf Hell

Inventor of the Hellschreiber, an early forerunner to the fax machine, Hell was a German engineer born in Eggmühl, Germany, who studied electrical engineering in Munich from 1919 to 1923. While there...

Leonardo Torres y Quevedo

Pioneer in remote control technology, Torres y Quevedo developed the Telekino — a robot that executed commands transmitted by electromagnetic waves — presenting it at the Paris Academy of Science in 1903. A...

Ruth Teitelbaum (née Lichterman)

One of the original programmers for the ENIAC computer, Teitelbaum played a pivotal role in the rise of computers. She graduated from Hunter College with a B.Sc. in Mathematics and was hired...