ArticleslgStudy

physics

National Defense Research Committee

National Defense Research Committee is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand National Defense Research Committee rather than just read about it. In short: The National Defense Research Committee (NDRC) was a United States government body created on June 27, 1940, to coordinate civilian scientific research for military purposes in the period before American entry into World War II. During the interwar period, relations between the military services and civilian scientists had largely broken down, and the existing advisory bodies lacked the funding and authority to brid…

National Defense Research Committee — main illustration
National Defense Research Committee — illustration

Key takeaways

  • National Defense Research Committee belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect National Defense Research Committee to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of National Defense Research Committee from memory before moving on to harder problems.

Reference excerpt

The National Defense Research Committee (NDRC) was a United States government body created on June 27, 1940, to coordinate civilian scientific research for military purposes in the period before American entry into World War II. During the interwar period, relations between the military services and civilian scientists had largely broken down, and the existing advisory bodies lacked the funding and authority to bridge the gap. Vannevar Bush, an engineer and science administrator who chaired the committee, secured President Roosevelt's approval for the new agency in a meeting that lasted less than fifteen minutes. The NDRC introduced the use of government contracts with universities and industrial laboratories to conduct military research, an approach that kept scientists in their own institutions rather than conscripting them into government service. During its year of autonomous operation, the committee initiated programs in microwave radar, the proximity fuze, and early atomic weapons research, giving the United States almost eighteen months of military research and development before Pearl Harbor. On June 28, 1941, the NDRC was absorbed into the newly created Office of Scientific Research and Development (OSRD) as a subordinate advisory body, a role it held until its dissolution on January 20, 1947. The contract system the NDRC established became the template for postwar federal support of scientific research, shaping institutions including the Office of Naval Research, the Atomic Energy Commission, and the National Science Foundation.

Background During World War I, efforts to apply scientific expertise to military problems had been hampered by poor coordination between civilian researchers and the armed services. The National Academy of Sciences and its National Research Council, created in 1916 to advise government agencies on scientific questions, operated on the assumption that the military services would identify their own needs and then request assistance. The NRC's lack of independent funding and authority had left it unable to accomplish much for national defense before the United States entered the war in 1917. Relations between the Council and the military had never fully recovered, and by the interwar period the two services had retreated into largely separate research programs, neither making serious efforts to draw on the growing corps of civilian experts in fields such as electronics and nuclear physics.

By the late 1930s, Bush and several fellow science administrators believed that this model was inadequate for a war that would be shaped by rapidly advancing technology. Military officers, in their view, were not sufficiently familiar with recent scientific developments to know what might be possible; what was needed was an organization that could assess military requirements independently and propose solutions the services had not imagined. Bush drew on his experience as chairman of the National Advisory Committee for Aeronautics (NACA), which had served during the interwar period as a liaison between civilian science and the military in aviation research. He envisioned a similar intermediary body, but with broader scope and the authority to fund its own research through contracts. In informal discussions during 1939 and 1940, Bush, Karl T. Compton (president of MIT), James B. Conant (president of Harvard), and Frank B. Jewett (president of both the National Academy of Sciences and Bell Labs) agreed that the existing military laboratory system would not produce the novel weapons a modern war would demand. All four were distinguished scientists who had advanced to administrative positions, and all were Republicans who were wary of expanding government power, yet they were united in the conviction that civilian scientific leadership was essential for national defense. Bush in particular was no friend of the New Deal and a great admirer of Herbert Hoover, yet he was persuaded that effective mobilization required a new federal agency operating directly under presidential authority. As he later recalled: "I knew that you couldn't get anything done in that damn town unless you organized under the wing of the President."

Establishment On June 12, 1940, with the fall of France imminent, Bush secured a meeting with President Roosevelt through presidential advisor Harry Hopkins. Bush brought a single page describing the proposed agency. Roosevelt approved it in under fifteen minutes. The president signed a letter on June 15 authorizing the creation of the committee and appointing Bush as chairman. The letter specified that the NDRC was not intended to replace Army and Navy research but to "supplement this activity by extending the research base and enlisting the aid of the scientists." The NDRC was formally established on June 27, 1940, by an order of the Council of National Defense, a dormant World War I-era body of six Cabinet secretaries that was briefly revived to provide legal authority for the new committee. This mechanism allowed Bush to begin operations using presidential emergency funds without waiting for a congressional appropriation. Bush later acknowledged the unorthodox nature of the maneuver, recalling that the creation of the NDRC "was an end run, a grab by which a small company of scientists and engineers, acting outside established channels, got hold of the authority and money for the program of developing new weapons."

British scientific exchange

The NDRC received a major stimulus in September 1940 when the Tizard Mission, a British scientific delegation led by Sir Henry Tizard, arrived in Washington carrying detailed information about British advances in radar, fire control, underwater detection, and explosives. The British were authorized to share virtually any military secret in exchange for access to American research. Both sides found the other further advanced than expected, though as Baxter noted, in the early period of the exchange the British contributed more than they received.

… excerpt ends here. Continue reading the full article.

Illustrations

National Defense Research Committee illustration
National Defense Research Committee: NACA committee, 1938
NACA committee, 1938
National Defense Research Committee: The Birmingham cavity magnetron
The Birmingham cavity magnetron
National Defense Research Committee illustration
National Defense Research Committee illustration

Worked examples

Example 1 — a first encounter with National Defense Research Committee

Start with the simplest possible case. Write down what National Defense Research Committee claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to National Defense Research Committee before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about National Defense Research Committee ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of National Defense Research Committee

In research
National Defense Research Committee appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses National Defense Research Committee in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
National Defense Research Committee is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1941 disestablishments in the United States, Agencies of the United States government during World War II, Government agencies established in 1940, so understanding it makes those chapters shorter.
In everyday life
Look for National Defense Research Committee outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “National Defense Research Committee” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study National Defense Research Committee in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what National Defense Research Committee means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain National Defense Research Committee out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is National Defense Research Committee in simple terms?

The National Defense Research Committee (NDRC) was a United States government body created on June 27, 1940, to coordinate civilian scientific research for military purposes in the period before American entry into World War II. During the interwar period, relations between the military services an…

Why does National Defense Research Committee matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study National Defense Research Committee?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on National Defense Research Committee.

Tags

  • 1941 disestablishments in the United States
  • Agencies of the United States government during World War II
  • Government agencies established in 1940
  • Nuclear history of the United States
  • Science and technology during World War II

Keep exploring