physics

Robley D. Evans (physicist)

Robley D. Evans (physicist) 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 Robley D. Evans (physicist) rather than just read about it. In short: Robley Dunglison Evans (May 18, 1907, University Place, Nebraska – December 31, 1995, Paradise Valley, Arizona) was an American nuclear physicist and pioneer of nuclear medicine. He was the president of the Health Physics Society in 1972–1973.

Key takeaways

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

Reference excerpt

Robley Dunglison Evans (May 18, 1907, University Place, Nebraska – December 31, 1995, Paradise Valley, Arizona) was an American nuclear physicist and pioneer of nuclear medicine. He was the president of the Health Physics Society in 1972–1973.

Biography His father Manley Jefferson Evans (1878–1970) and mother Alice Jennie Turner (1882–1965) married in August 1905 in O'Neill, Nebraska. Manley J. Evans was a professor at Nebraska Wesleyan University. Robley D. Evans was their only child. He is named in honor of Admiral Robley D. Evans, but there is no immediate family connection. In 1912 the family moved to Los Angeles County. Manley J. Evans taught at Hollywood High School for 32 years. At Hollywood High School, Robley D. Evans was the president of the science club and the valedictorian of the Class of 1925. In the 8th grade, even before he entered high school, he was playing percussion instruments professionally in danceable jazz bands. In high school he played in the regular band and sometimes in orchestra, symphony, and the Hollywood Bowl. Evans studied physics at California Institute of Technology (Caltech) and graduated with a bachelor's degree in 1928, a master's degree in 1929. and a PhD in 1932. His thesis advisor was Robert Andrews Millikan. Evans's thesis concerned the measurement of "background radiation coming from the earth, so that it could be distinguished from cosmic radiation." He married his first wife, Gwendolyn Elizabeth Aldrich (1905–1989), in 1928. From 1932 to 1934 he was a National Research Council Fellow at the University of California, Berkeley.

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Robley D. Evans (physicist)

Start with the simplest possible case. Write down what Robley D. Evans (physicist) 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 Robley D. Evans (physicist) 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 Robley D. Evans (physicist) 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 Robley D. Evans (physicist)

In research: Robley D. Evans (physicist) 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 Robley D. Evans (physicist) 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: Robley D. Evans (physicist) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1907 births, 1995 deaths, American biophysicists, so understanding it makes those chapters shorter.
In everyday life: Look for Robley D. Evans (physicist) 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 “Robley D. Evans (physicist)” →

Affiliate

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

How to study Robley D. Evans (physicist) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Robley D. Evans (physicist) 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 Robley D. Evans (physicist) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Robley D. Evans (physicist) in simple terms?

Why does Robley D. Evans (physicist) 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 Robley D. Evans (physicist)?

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 Robley D. Evans (physicist).