Vannevar Bush

Vannevar Bush was a highly influential American engineer, inventor, and science administrator.

He played a vital role in shaping how the United States uses scientific research for both national security and economic growth. During World War II, Bush directed the Office of Scientific Research and Development (OSRD). Through this office, he managed nearly all wartime military research and development. This included overseeing the development of radar and the early administration of the Manhattan Project. His leadership helped bridge the gap between laboratory science and practical military application.

Bush's career was marked by significant leadership roles in major institutions. He joined the Department of Electrical Engineering at the Massachusetts Institute of Technology (MIT) in 1919. By 1932, he had risen to become the vice president of MIT and the dean of its School of Engineering.

In 1938, he accepted the presidency of the Carnegie Institution of Washington. This institution had a large endowment of $33 million and spent $1.5 million annually on research. These positions allowed him to influence scientific policy on a national scale.

As an engineer, Bush focused on creating machines that could solve complex mathematical problems. In 1927, he began constructing a differential analyzer. This was a mechanical analog computer, meaning it used physical parts to simulate mathematical processes.

The machine utilized a table-like array of shafts and pens to mechanically plot equations. It featured both electrical and mechanical components. This allowed it to solve differential equations involving as many as 18 independent variables. His work in this area earned him the Louis E. Levy Medal from the Franklin Institute in 1928.

Bush's engineering work also laid the groundwork for modern digital technology. One of his graduate students at MIT, Claude Shannon, used Bush's methods to begin the theory of digital circuit design. Shannon applied Boolean algebra—a system of mathematical logic—to electronic relay and switching circuits.

Additionally, Bush worked on the Rapid Analytical Machine (RAM) for codebreaking efforts. Although the RAM was found to be unreliable by 1938, the project represented an important step toward modern computing. These efforts helped transition engineering from purely mechanical systems to electronic ones.

Beyond the laboratory, Bush was a successful entrepreneur who helped found the Raytheon Company in 1922.

He worked with physicist Charles G. Smith to market the S-tube, a voltage-regulator tube. Before this invention, radios often required two different types of batteries to function. The S-tube allowed radios to operate using power from a standard electrical outlet. This technological advancement made Bush wealthy and helped establish Raytheon as a major electronics and defense company. His financial independence allowed him to focus on public service and scientific advocacy.

Bush was a visionary who predicted how humans would interact with information in the future. In the 1930s, he conceived of a hypothetical device called the memex. The memex was intended to be an adjustable microfilm viewer.

He imagined it would allow users to link information together in a way that mimicked human thought. This concept is very similar to modern hypertext, which connects digital documents through links. His 1945 essay, "As We May Think," served as a profound inspiration for many future generations of computer scientists.

In his final major role, Bush acted as a primary science advisor to the United States government. During World War II, he coordinated the efforts of approximately 6,000 leading American scientists. He ensured that high-priority projects, like the Manhattan Project, received necessary support from the highest levels of government.

In 1945, he published a report titled "Science, The Endless Frontier." In this document, he argued that the government must expand its support for scientific research. His advocacy was the primary force behind the eventual creation of the National Science Foundation.