astronomy

Ralph Belknap Baldwin

Ralph Belknap Baldwin is a astronomy 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 Ralph Belknap Baldwin rather than just read about it. In short: Ralph Belknap Baldwin (June 6, 1912 – October 23, 2010) was an American planetary scientist known for his work on lunar craters, beginning in the late 1940s. His book, The Face of the Moon made the case for the impact nature of lunar craters.

Key takeaways

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

Reference excerpt

Ralph Belknap Baldwin (June 6, 1912 – October 23, 2010) was an American planetary scientist known for his work on lunar craters, beginning in the late 1940s. His book, The Face of the Moon made the case for the impact nature of lunar craters. He published The Measure of the Moon in 1963. Prior to his lunar work he was Senior Physicist at Johns Hopkins University's Applied Physics Laboratory during World War II working on the proximity fuze. In 1947 he began working for Oliver Machinery Company. In 1970 he became president of the company and chairman of the board in 1982. He retired in 1984. He died on October 23, 2010.

Early life Baldwin was born in Grand Rapids, Michigan. He attended the University of Michigan, receiving his B.S. in 1934, M.S. in 1935, and Ph.D. in 1937, on the "spectroscopic study of novae". After graduation, he taught astronomy at the University of Michigan, University of Pennsylvania, and Northwestern University from 1935 through 1942. The photographs at the Adler Planetarium, where he lectured to earn extra money, sparked his interest in lunar craters. This led to an article in Popular Astronomy in 1942 and later his book The Face of the Moon, in 1949. During World War II Baldwin helped to develop the radar proximity fuze. He published a history of proximity fuze development in 1980 entitled The Deadly Fuze.

Awards and honors Baldwin has been honored for each of his three careers. During his work on the radio proximity fuze he was awarded the Army Chief of Ordnance Award and the U.S. Naval Bureau Ordnance Award (1945). In 1947 he was a recipient of the Presidential Certificate of Merit. He was elected a Fellow of the American Academy of Arts and Sciences in 1980. In planetary science he has been awarded the Barringer Medal (2000), Leonard Medal (1986), G.K. Gilbert Award (1986) and the J. Lawrence Smith Medal (1979). The Ralph B. Baldwin Award by the Wood Machinery Manufacturers of America was established in his honor.

References

External links Oral History interview transcript for Ralph Belknap Baldwin on 25 October 1989, American Institute of Physics, Niels Bohr Library and Archives Ralph Belknap Baldwin's Autobiography. "Highlighted story of a long and unusual life" 1998

Illustrations

Worked examples

Example 1 — a first encounter with Ralph Belknap Baldwin

Start with the simplest possible case. Write down what Ralph Belknap Baldwin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Ralph Belknap Baldwin 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 Ralph Belknap Baldwin 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 Ralph Belknap Baldwin

In research: Ralph Belknap Baldwin appears in astronomy 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 Ralph Belknap Baldwin 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: Ralph Belknap Baldwin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1912 births, 2010 deaths, American planetary scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Ralph Belknap Baldwin 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.

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How to study Ralph Belknap Baldwin in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ralph Belknap Baldwin means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Ralph Belknap Baldwin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ralph Belknap Baldwin in simple terms?

Why does Ralph Belknap Baldwin matter?

Because it connects several astronomy 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 Ralph Belknap Baldwin?

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 Ralph Belknap Baldwin.