Vannevar Bush passed away in Belmont, Massachusetts, at the age of 84 from pneumonia. His death marked the end of a remarkable life dedicated to scientific innovation and public service.

The Office of Scientific Research and Development (OSRD) was officially abolished without a successor organization. This marked the end of an era of centralized wartime scientific coordination, although its legacy would continue to shape American science policy.

Vannevar Bush became Chairman of the Research and Development Board (RDB). In this position, he oversaw the coordination of military research and development efforts until his resignation on October 14, 1948.

Vannevar Bush was present at the Alamogordo Bombing and Gunnery Range for the Trinity nuclear test, the first detonation of an atomic bomb. This event marked a turning point in human history and had a profound impact on the course of World War II and the subsequent Cold War.

The Joint Chiefs of Staff agreed to allow employment of proximity fuzes in artillery shells from December 25. This decision had a significant impact on the effectiveness of Allied artillery against ground targets and V-1 flying bombs.

Vannevar Bush met with President Franklin D. Roosevelt and Vice President Henry A. Wallace to discuss the atomic bomb project. This pivotal meeting led to Roosevelt's approval and the expediting of the atomic program, ultimately resulting in the Manhattan Project.

President Franklin D. Roosevelt established the Office of Scientific Research and Development (OSRD) with Executive Order 8807. This marked a significant moment in the history of American scientific research, as the OSRD became the central agency for coordinating wartime research and development efforts.

The Radiation Laboratory at MIT tested its airborne radar from an Army B-18. This event was a crucial step in the development of radar technology during World War II, which significantly contributed to Allied efforts in submarine detection and air defense.

The American Appliance Company was established by Bush, Marshall and Smith in July 1922, with the goal of manufacturing silent refrigerators. Bush and Smith were among its five directors. The company would later be renamed Raytheon Company to manufacture and market the S-tube voltage regulator.

Vannevar Bush was born in Everett, Massachusetts. This marks the beginning of the life of a significant figure in American science and technology policy, whose work would have a profound impact on the course of scientific research and development in the United States, particularly during and after World War II.